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Exploring Data Videos 25 videos

AP Statistics 1.2 Exploring Data
219 Views

AP Statistics: Exploring Data Drill 1, Problem 2. Which of the following is the best way to display this type of data?

AP Statistics 1.5 Exploring Data
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AP Statistics: Exploring Data Drill 1, Problem 5. Which pieces of information would we need to create this graph?

AP Statistics 2.3 Exploring Data
194 Views

AP Statistics: Exploring Data Drill 2, Problem 3. Which set of points, if put in a scatterplot, would show us a positive correlation?

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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

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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...