Question

(10 points) 1. The height (in feet) and volume of usable lumber (in cubic feet) of 32 cherry trees are measured by a researcher. The goal is to determine if volume of usable lumber can be estimated from the height of a tree. The results are plotted below. Volume 0 60. 7 0.0 80.0 90.0 Height (a) In this study, the response variable (y) is A. height. B. volume. C. height or volume. It doesn't matter which is considered the response. D. neither height nor volume. The measuring instrument used to measure height is the response variable. (b) The scatterplot suggests A. there is at least one outlier in the data. B. there is a positive association between height and volume. C. both A and B. D. neither A nor B.

Answer 1

Ans:

1)

a)Response variable is Volume

Option B is correct(Volume)

b)

There is at least one outlier in the data.

There is positive association between height and volume.

Option C is correct.

Both A and B.

2)

a)

A plausible value for correlation between weight and mpg is -0.9

Option D is correct(-0.9)