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CAHSEE Math 4.1 Statistics, Data, and Probability II 227 Views


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Description:

Statistics, Data, and Probability II Drill 4 Problem 1. Which of the following scatter plots represents a negative correlation between the data sets?

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English Language

Transcript

00:03

Here's your shmoop du jour.

00:05

Which of the following scatter plots represent a negative correlation between the data sets?

00:12

And here are the potential answers...

00:17

Whoa. Negative corre-what?

00:20

Ok, five dollar word alert. A correlation occurs when something is similar to something else.

00:26

Like… there’s a correlation between the TV viewing audience of Honey Boo Boo…

00:30

…and the number of antidepressants sold daily in the US.

00:35

So when a correlation is NEGATIVE it’s basically just saying that they’re NOT like each other.

00:40

In plot A, we can see that as engine size increases…

00:44

…horsepower also increases… so the two are POSITIVELY correlated with one another.

00:50

B is just the opposite… and THAT’s the one we’re looking for.

00:53

As golfing experience increases, golf scores go down.

00:59

So our answer is B.

01:01

As in, “Bogey.”

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