ShmoopTube

00:03

Alright, let's put this question on your plate and eat it.

00:07

Twenty students who have driver's licenses were asked about the number of tickets and/or

00:10

accidents that they have had and their grade point averages.

00:14

The students without driver’s licenses were not polled, mainly because…

00:17

well, they shouldn’t be driving.

00:19

The results of the survey is shown in the following graph.

00:23

Which of the following statements is the most accurate, based on the graph?

00:27

And here are the potential answers...

00:36

Wow, gnarly graph.

00:38

Really hard to figure out what it’s telling us, as there’s no clear pattern.

00:44

So let’s just go through one by one…

00:47

A. “There exists a positive correlation between GPA and the number of tickets/accidents.”

00:52

Hm… the smarter kids get more tickets?

01:01

Doesn’t make much sense… and it’s not supported by the graph.

01:04

The points would be going up and to the right if that were the case…moving on...

01:08

B. “There exists a negative correlation between GPA and the number of tickets/accidents.”

01:14

Would make more sense, but… same deal. Not a clear-cut pattern from the data here.

01:19

C. “There exists a constant correlation between GPA and the number of tickets/accidents.”

01:25

No – nothing is ‘constant’ about this graph.

01:27

Other than our constant confusion as to what it’s trying to say.

01:34

D. “There is no correlation between GPA and the number of tickets/accidents.”

01:39

Yeah – this has to be it... there’s really NO correlation between much of anything here.

01:43

As hard as we may try to find one. So our answer is D.

01:46

As in… “Dumb people aren’t necessarily the worst drivers.”

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