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How can we make science probably accurate? | Max Notarangelo | TEDxQuestU


so I’m gonna try to see how it goes so

so I’m gonna try to see how it goes so the study behind it was published August

the study behind it was published August

the study behind it was published August 2015 in a psychologist conducted a

2015 in a psychologist conducted a

2015 in a psychologist conducted a hundred exact replications published

hundred exact replications published

hundred exact replications published studies only 36 of the replicates itself

studies only 36 of the replicates itself

studies only 36 of the replicates itself that is the same statistically

that is the same statistically

that is the same statistically significant results the first even worse

significant results the first even worse

significant results the first even worse only 47 of them thoughts the phone in

only 47 of them thoughts the phone in

only 47 of them thoughts the phone in the night confidence intervals for the

the night confidence intervals for the

the night confidence intervals for the original studies now if the original

original studies now if the original

original studies now if the original specs were done correctly because 95 of

specs were done correctly because 95 of

specs were done correctly because 95 of the reputations to follow the

the reputations to follow the

the reputations to follow the comprehensible because that’s what a

comprehensible because that’s what a

comprehensible because that’s what a confident civil is the only 47 did other

confident civil is the only 47 did other

confident civil is the only 47 did other studies to show fairly certain age in

studies to show fairly certain age in

studies to show fairly certain age in other scientific fields the larger

other scientific fields the larger

other scientific fields the larger problems have come in psychology and

problems have come in psychology and

problems have come in psychology and medicine which is especially worried so

medicine which is especially worried so

medicine which is especially worried so this seems like a pretty big problem for

this seems like a pretty big problem for

this seems like a pretty big problem for science a lot of science this is how

science a lot of science this is how

science a lot of science this is how many things in a fix-it lady larger

many things in a fix-it lady larger

many things in a fix-it lady larger sample sizes permutation of trials make

sample sizes permutation of trials make

sample sizes permutation of trials make stricter criteria for p-values all of

stricter criteria for p-values all of

stricter criteria for p-values all of these ideas and more are worth exploring

these ideas and more are worth exploring

these ideas and more are worth exploring the theme of this accident is

the theme of this accident is

the theme of this accident is questioning the north I will argue that

questioning the north I will argue that

questioning the north I will argue that the probably goes deeper than just

the probably goes deeper than just

the probably goes deeper than just specific research as alternative

besides busy these continues with Bayes

besides busy these continues with Bayes theorem here it is so the first term is

theorem here it is so the first term is

theorem here it is so the first term is T of the key given me this is the

T of the key given me this is the

T of the key given me this is the probability assuming that our hypothesis

probability assuming that our hypothesis

probability assuming that our hypothesis is true that you can get we’re doing

is true that you can get we’re doing

is true that you can get we’re doing science this is how confident we are in

science this is how confident we are in

science this is how confident we are in our hypothesis before we go to our

our hypothesis before we go to our

our hypothesis before we go to our second Nexus pap this is the probability

second Nexus pap this is the probability

second Nexus pap this is the probability that we get the other to be done so we

that we get the other to be done so we

that we get the other to be done so we put all these steps together it’s our

put all these steps together it’s our

put all these steps together it’s our lot P of each giving me this is the

lot P of each giving me this is the

lot P of each giving me this is the posterior probability that hypothesis is

posterior probability that hypothesis is

posterior probability that hypothesis is true so we’re doing science this is how

true so we’re doing science this is how

true so we’re doing science this is how population in our hypothesis after we’ve

population in our hypothesis after we’ve

population in our hypothesis after we’ve done our study so it turns out that we

done our study so it turns out that we

done our study so it turns out that we can use any hypothesis here even though

can use any hypothesis here even though

can use any hypothesis here even though methods so that’s a frequentist

methods so that’s a frequentist

methods so that’s a frequentist statistics that’s except they only use

statistics that’s except they only use

statistics that’s except they only use one term on the left

one term on the left

one term on the left P D given H naught Q H given you know

P D given H naught Q H given you know

P D given H naught Q H given you know these are not the same thing the

these are not the same thing the

these are not the same thing the probability that I’m wearing a shirt

probability that I’m wearing a shirt

probability that I’m wearing a shirt human wearing a red shirt is 100% the

human wearing a red shirt is 100% the

human wearing a red shirt is 100% the probability that wearing a red shirt

probability that wearing a red shirt

probability that wearing a red shirt given that I’m Granger is not understand

given that I’m Granger is not understand

given that I’m Granger is not understand in fact seem to be quite so this is the

in fact seem to be quite so this is the

in fact seem to be quite so this is the main problem in frequency it’s measuring

main problem in frequency it’s measuring

main problem in frequency it’s measuring the wrong thing instead of everything

the wrong thing instead of everything

the wrong thing instead of everything of our hypothesis given our evidence

of our hypothesis given our evidence

of our hypothesis given our evidence unless we probability of getting our

unless we probability of getting our

unless we probability of getting our evidence giving some hypothesis this is

evidence giving some hypothesis this is

evidence giving some hypothesis this is just totally backwards so what’s my

just totally backwards so what’s my

just totally backwards so what’s my third example plus my mate at 4.30 much

third example plus my mate at 4.30 much

third example plus my mate at 4.30 much thinner and one of them is weighted so

thinner and one of them is weighted so

thinner and one of them is weighted so lent heads 80% of the time so we’ll take

lent heads 80% of the time so we’ll take

lent heads 80% of the time so we’ll take the point of random and then try to

the point of random and then try to

the point of random and then try to determine using evidence of pointless

determine using evidence of pointless

determine using evidence of pointless whether the point be pissed

whether the point be pissed

whether the point be pissed well what are the fingertips is those

well what are the fingertips is those

well what are the fingertips is those waiting for the point and it’s heads so

well let’s try our frequences method

well let’s try our frequences method first our hypothesis we put the twenties

first our hypothesis we put the twenties

first our hypothesis we put the twenties week which means of the null hypothesis

week which means of the null hypothesis

week which means of the null hypothesis is fair so what’s the probability given

is fair so what’s the probability given

is fair so what’s the probability given our know that hast given the coin is

our know that hast given the coin is

our know that hast given the coin is fair then we would get the day we got

fair then we would get the day we got

fair then we would get the day we got that we get as well insensitive

that we get as well insensitive

that we get as well insensitive percent of the time so now use the

percent of the time so now use the

percent of the time so now use the standard scientific significance

standard scientific significance

standard scientific significance P is less than point zero five then this

P is less than point zero five then this

P is less than point zero five then this data is not statistically significant

data is not statistically significant

data is not statistically significant which means you can’t learn anything

which means you can’t learn anything

which means you can’t learn anything from the frigid detector with a Bayesian

from the frigid detector with a Bayesian

from the frigid detector with a Bayesian method can make a conclusion let’s use

method can make a conclusion let’s use

method can make a conclusion let’s use Bayes theorem the traffic database so

Bayes theorem the traffic database so

Bayes theorem the traffic database so again we will do each tournament of time

again we will do each tournament of time

again we will do each tournament of time so first we community this is the

so first we community this is the

so first we community this is the probability doing our hypothesis which

probability doing our hypothesis which

probability doing our hypothesis which is that the point is waiting that we

is that the point is waiting that we

is that the point is waiting that we would get the heads so in the way home

would get the heads so in the way home

would get the heads so in the way home Len has a you for some time so this is

Len has a you for some time so this is

Len has a you for some time so this is just 80 percent of point

just 80 percent of point

just 80 percent of point next is P of each this is the prior

next is P of each this is the prior

next is P of each this is the prior probability that would have to be the

probability that would have to be the

probability that would have to be the clock since there’s four points and one

clock since there’s four points and one

clock since there’s four points and one of them is wait at this is just one last

of them is wait at this is just one last

of them is wait at this is just one last piece this is the probability of getting

piece this is the probability of getting

piece this is the probability of getting heads before we do so there’s a poor

heads before we do so there’s a poor

heads before we do so there’s a poor chance we take away that let has 80

chance we take away that let has 80

chance we take away that let has 80 percent there’s a three quarter chance

percent there’s a three quarter chance

percent there’s a three quarter chance when we get one with Fairfax in each of

when we get one with Fairfax in each of

when we get one with Fairfax in each of those one that’s 50 percent of time so

those one that’s 50 percent of time so

those one that’s 50 percent of time so we take all these numbers put them back

we take all these numbers put them back

we take all these numbers put them back to the Bayes theorem to do the matter

to the Bayes theorem to do the matter

to the Bayes theorem to do the matter turns out there’s a 35% chance

turns out there’s a 35% chance

turns out there’s a 35% chance so the point we just split is the way to

so the point we just split is the way to

so the point we just split is the way to talk okay

you’re learning with amazing that the

you’re learning with amazing that the country we were implement interest we

country we were implement interest we

country we were implement interest we changed our probability weighted in 25%

changed our probability weighted in 25%

changed our probability weighted in 25% 35% this is the main advantage of

35% this is the main advantage of

35% this is the main advantage of asia-pacific

asia-pacific

asia-pacific he frequented statistics all infants are

he frequented statistics all infants are

he frequented statistics all infants are black and white either a result a

black and white either a result a

black and white either a result a significant report isn’t all things to

significant report isn’t all things to

significant report isn’t all things to do after they put appointments he said

do after they put appointments he said

do after they put appointments he said that they need to collect more did on

that they need to collect more did on

that they need to collect more did on the other hand of Bayesian to make

the other hand of Bayesian to make

the other hand of Bayesian to make inferences in shades of gray

inferences in shades of gray

inferences in shades of gray Bayesian can also go collect our data to

Bayesian can also go collect our data to

Bayesian can also go collect our data to be more sure but right now they have to

be more sure but right now they have to

be more sure but right now they have to the question how likely is it that the

the question how likely is it that the

the question how likely is it that the point you just love is a later point so

point you just love is a later point so

point you just love is a later point so it turns out the figuring out the prior

it turns out the figuring out the prior

it turns out the figuring out the prior probability of our hypothesis to be is a

probability of our hypothesis to be is a

probability of our hypothesis to be is a lot harder than it was usually than he

lot harder than it was usually than he

lot harder than it was usually than he was not available so you know doing

was not available so you know doing

was not available so you know doing science the prior probability is usually

science the prior probability is usually

science the prior probability is usually subjected to tension adjustment for

subjected to tension adjustment for

subjected to tension adjustment for researchers rather distributed imagine

researchers rather distributed imagine

researchers rather distributed imagine see this means that different scientists

see this means that different scientists

see this means that different scientists for their packaging for the prior

for their packaging for the prior

for their packaging for the prior probabilities about the same hypothesis

probabilities about the same hypothesis

probabilities about the same hypothesis so this might be bad system if what’s

so this might be bad system if what’s

so this might be bad system if what’s science fair publish were probabilities

science fair publish were probabilities

science fair publish were probabilities and hypotheses be triggered because

and hypotheses be triggered because

and hypotheses be triggered because those who depend on subjective

those who depend on subjective

those who depend on subjective probabilities individual researchers so

probabilities individual researchers so

probabilities individual researchers so depending on who did the study together

depending on who did the study together

depending on who did the study together another experiment themselves our

another experiment themselves our

another experiment themselves our objective increased objective results

objective increased objective results

objective increased objective results that shouldn’t depend on researcher so

that shouldn’t depend on researcher so

that shouldn’t depend on researcher so let’s go back acquaintance except this

let’s go back acquaintance except this

let’s go back acquaintance except this time we don’t know

time we don’t know

time we don’t know and don’t know prior probability we’re

and don’t know prior probability we’re

and don’t know prior probability we’re just sticking point

just sticking point

just sticking point totally Atlanta only knows that it’s

totally Atlanta only knows that it’s

totally Atlanta only knows that it’s either way tonight has made seven times

either way tonight has made seven times

either way tonight has made seven times understand so once we do then we

understand so once we do then we

understand so once we do then we calculate is called with base batteries

calculate is called with base batteries

calculate is called with base batteries the base factor depends only on the

the base factor depends only on the

the base factor depends only on the experimental result degree two

experimental result degree two

experimental result degree two hypotheses say each one h9 the base

hypotheses say each one h9 the base

hypotheses say each one h9 the base factor is P P given h1 so with our phone

factor is P P given h1 so with our phone

factor is P P given h1 so with our phone if each one is not possible to the point

if each one is not possible to the point

if each one is not possible to the point its way to speech not fair then the

its way to speech not fair then the

its way to speech not fair then the probability people get ahead my weight

probability people get ahead my weight

probability people get ahead my weight is 8% eight probably isn’t a spare fifty

is 8% eight probably isn’t a spare fifty

is 8% eight probably isn’t a spare fifty percent of five so base factors just one

percent of five so base factors just one

percent of five so base factors just one point six so what can you do is well we

point six so what can you do is well we

point six so what can you do is well we can multiply our base factor by our

can multiply our base factor by our

can multiply our base factor by our primary nerd calculate where posterior

primary nerd calculate where posterior

primary nerd calculate where posterior won’t we shouldn’t need after we see

won’t we shouldn’t need after we see

won’t we shouldn’t need after we see evidence

evidence

evidence so that’s so Bayes factor that’s what we

so that’s so Bayes factor that’s what we

so that’s so Bayes factor that’s what we actually need a science that’s actually

actually need a science that’s actually

actually need a science that’s actually record so instead trying to make

record so instead trying to make

record so instead trying to make inferences or get results that the

inferences or get results that the

inferences or get results that the participates

participates

participates we want to resolve to change our beliefs

we want to resolve to change our beliefs

we want to resolve to change our beliefs in the direction of truth this was the

in the direction of truth this was the

in the direction of truth this was the base factor of the students so science

base factor of the students so science

base factor of the students so science we need to know what about your data

we need to know what about your data

we need to know what about your data before campaigns at all there are times

before campaigns at all there are times

before campaigns at all there are times harder where we ended up on diesel take

harder where we ended up on diesel take

harder where we ended up on diesel take the following problem

the following problem

the following problem 10 out of every thousand residents of

10 out of every thousand residents of

10 out of every thousand residents of these tournament with breast cancer 90

these tournament with breast cancer 90

these tournament with breast cancer 90 excess power of the remaining 990 women

excess power of the remaining 990 women

excess power of the remaining 990 women 89 will also test object a woman test

89 will also test object a woman test

89 will also test object a woman test possible he wants to know whether she’s

possible he wants to know whether she’s

possible he wants to know whether she’s breast cancer for sure or these from the

breast cancer for sure or these from the

breast cancer for sure or these from the tentacles

tentacles

tentacles so this problem presented over $4,000

so this problem presented over $4,000

so this problem presented over $4,000 well this is actually not too far solved

well this is actually not too far solved

well this is actually not too far solved using Bayes theorem and really Seoul say

using Bayes theorem and really Seoul say

using Bayes theorem and really Seoul say the hypothesis it’s a woman’s breast

the hypothesis it’s a woman’s breast

the hypothesis it’s a woman’s breast cancer any evidence that she tested

cancer any evidence that she tested

cancer any evidence that she tested positive so we can just use Bayes

positive so we can just use Bayes

positive so we can just use Bayes thinner as we do I want the gross stuff

thinner as we do I want the gross stuff

thinner as we do I want the gross stuff this time

this time

this time turns out there’s about a 90% chance

turns out there’s about a 90% chance

turns out there’s about a 90% chance here’s the problem a 1/4 of doctors

here’s the problem a 1/4 of doctors

here’s the problem a 1/4 of doctors answer this question correct this is a

answer this question correct this is a

answer this question correct this is a multiple choice question by problem

multiple choice question by problem

multiple choice question by problem another full quarter doctors so that the

another full quarter doctors so that the

another full quarter doctors so that the woman has

woman has

woman has that’s a huge thing it makes total sense

that’s a huge thing it makes total sense

that’s a huge thing it makes total sense these doctors who made this mistake

these doctors who made this mistake

these doctors who made this mistake because they all their lives so is the

because they all their lives so is the

because they all their lives so is the probability both the show

probability both the show

probability both the show but also we can’t always go for dinner

but also we can’t always go for dinner

but also we can’t always go for dinner each women only got past what so it

each women only got past what so it

each women only got past what so it seems similar bandages to use amazing

seems similar bandages to use amazing

seems similar bandages to use amazing statistics rather than the standard of

statistics rather than the standard of

statistics rather than the standard of treatment in statistics use bioscience

treatment in statistics use bioscience

treatment in statistics use bioscience if sons you may sit to visit people will

if sons you may sit to visit people will

if sons you may sit to visit people will be better

be better

be better Beasley’s and they do better the proper

Beasley’s and they do better the proper

Beasley’s and they do better the proper kind of problem that we just saw science

kind of problem that we just saw science

kind of problem that we just saw science based on all the information disposal

based on all the information disposal

based on all the information disposal not just

not just

not just mythix really make conclusions that work

mythix really make conclusions that work

mythix really make conclusions that work just black and white with the country’s

just black and white with the country’s

just black and white with the country’s brightest and most normal be able to

brightest and most normal be able to

brightest and most normal be able to have scientifically informed beliefs

have scientifically informed beliefs

have scientifically informed beliefs about how these beliefs about the way

about how these beliefs about the way

about how these beliefs about the way the one who actually did

”

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