The data distributions below show the running times of a group of runners before and after training for a marathon Before Training
After Training
Number of Runners
inn
Running Times
Running Times
Which statement CORRECTLY explains the summary statistics that should be used to compare the running times?
A
The distributions are normal, so the mean and standard deviation should be used to compare the running times.
B
The distributions are skewed, so the mean and standard deviation should be used to compare the running times.
С
The distributions are normal, so the median and interquartile range should be used to compare the running times.
D
The distributions are skewed, so the median and interquartile range should be used to compare the running times,