1) A certain professor's salary is much higher than that of any of the students in his class of 20 students. Which one of these measures is most appropriate to describe the center of the salary range in the classroom?

Group of answer choices

average

A. mean

B. median

C. mode

D. maximum

E. standard deviation

2) A set of observations follows a bell-shaped normal distribution. Both the mean and the median are 200. The range is 50. Knowing that, about what would the minimum observation be?

Group of answer choices

A. 150

B. 155

C. 175

D. 185

E. 200

3) Which of these correlation coefficients (Pearson's r) implies the weakest linear relationship between two measurement variables?

Group of answer choices

-0.83

-0.42

-0.07

0.27

0.62