Here are three histograms. Histogram C 54. 48- Histogram A Histogram B 54- 54- 48- 48- 42- 42- 36- 36- 30+ 30- 24- 24- 18+ 18- 12- 12- 12 6 6+ 6- 0- 0- 0 4 8 12 16 20 24 28 32 36 0 4 8 12 16 20 24 28 32 36 42- 36- 30- 24- 18- ΗΠ 0 4 8 12 16 20 24 28 32 36 (a) Which histogram is the closest to being uniform? ☑ ○ Histogram B ○ Histogram C ○ Histogram A (b) Which histogram is skewed to the left the most? Histogram A Histogram B (c) Which histogram is best described as unimodal? O Histogram A Histogram B Histogram C Histogram C (d) Which histogram is the closest to being symmetric? Histogram A O Histogram B ◇ Histogram C

K Listed below are altitudes (in thousands of feet) and outside air temperatures (in °F) recorded during a flight between two cities. A. Altitude Temperature Use these data to complete parts (a) through (d) below. A Temp. 60- -60- a. Construct a scatterplot. Choose the correct answer below. O -O | O O strong O b p 3 56 Alt. 410 9 39 weak positive correlation strong negative correlation 13 26 strong positive correlation O weak negative correlation B. 23 - 6 A Temp. 60- -60- 26 - 30 O O -O- 32 - 42 Alt. 40 b. Briefly characterize the correlation in words. Choose the correct answer below. 33 - 52 h .. O C. 60- -60- Temp. O 10 O O Alt. 40 SO D. A Temp. O 60- -60- O O O O Alt. 40

Pearson’s r can also be considered as: Group of answer choices a measure of how much values differ in a sample. the size of a typical value. the number of independent pieces of information. a measure of covariance.

The variable week# is at what level of measurement