Question

question 7 of 10
a regression line was calculated for three similar data sets (a, b, and c) that measure the height of a plant (in inches) over time (in days). the residual plots for each set are shown. based on the residuals, which data set is best fit by the regression line?
a. data set a
b. data set b
c. data set c

Explanation:

A good regression fit has residuals that are randomly scattered around 0, with no clear pattern, and small residual magnitudes. Data set C's residuals are closely clustered near 0 with random scatter, while A has a curved pattern and B has residuals split into two distinct groups (a non-random pattern), indicating poor fit.

Answer:

C. Data set C