If two groups of numbers have the same mean, then
A. their standard deviations must also be equal
B. their medians must also be equal
C. their modes must also be equal
D. None of these alternatives is correct
Answer:D
If two groups of numbers have the same mean, then
A. their standard deviations must also be equal B. their medians must also be equal C. their modes must also be equal D. None of these alternatives is correct