Results from the 2017 AP Statistics Exam

Results from the 2017

AP Statistics Exam

Jessica Utts,

University of California, Irvine

Chief Reader, AP Statistics

jutts@uci.edu

July 28, 2017

Plan for

each of

the six

questions

? State question

? Present solution

? Describe common student

errors

? Suggest teaching tips

? Report average score

(all at the end)

Question #1:

Regression for

length and weight

of gray wolves

Explain positive, linear,

strong; interpret slope;

find weight given

length & residual

Question 1

Researchers studying a pack of gray wolves

in North America collected data on the

length x, in meters, from nose to tip of tail,

and weight y, in kilograms, of the wolves. A

scatterplot of weight versus length revealed

a relationship between the two variables

described as positive, linear, and strong.

Question 1 ¨C Part (a)

a) For the situation described above, explain

what is meant by each of the following words.

i. Positive:

ii. Linear:

iii.Strong:

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