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Exploring Data Videos 25 videos

AP Statistics 5.2 Exploring Data
23 Views

AP Statistics 5.2 Exploring Data. Which method would not be a good option?

AP Statistics 2.1 Exploring Data
210 Views

AP Statistics 2.1 Exploring Data. How does this change affect the mean, standard deviation, and IQR?

AP Statistics 5.1 Exploring Data
37 Views

AP Statistics 5.1 Exploring Data. What does this information tell us about the data?

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AP Statistics 4.1 Exploring Data 196 Views


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AP Statistics 4.1 Exploring Data. A least-squares regression line is one that fits the data so that...what?

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Transcript

00:00

Thank you We sneak and here's your shmoop toos your

00:05

brought to you by least squares which is a really

00:08

depressing outcome If you're playing a fellow a least squares

00:13

regression line is one that fits the data so that

00:17

what And here the pendulum Already So we've basically got

00:23

another definition video on our hands here least squares regression

00:28

What is it Why do we need it And well

00:30

who really cares Well some of us do believe anyway

00:33

this question just wants to know if we understand the

00:36

point of the least squares regression well we always want

00:40

the sum of the squares of the deviations to be

00:42

a small as possible so that the line describing that

00:45

data representatives is close to perfect as we can get

00:48

it least squares regression line is intended to do just

00:52

that to minimize the sum of the square deviations and

00:55

by doing so provide a best pit summary of the

00:57

relationship between our two variables It's something like a tailor

01:01

in that respect except it doesn't have to go around

01:03

measuring the deviations in scenes or so yeah this is

01:08

kind of one of those either you know or you

01:10

don't problems And in this case if you know it

01:12

you'll pick and through deep This is one of the

01:14

few times we fully endorsed regressing long as it's here 00:01:18.972 --> [endTime] and not in the playground

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Want to pull an Oliver Twist and ask us for more? We've gotcha covered. Head over to /video/subjects/math/test-prep/ap-statistics/ for more AP...