If two groups of numbers have the same mean, then
Their standard deviations must also be equal
Their medians must also be equal
Their modes must also be equal
None of the above
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4
I hope the correct answer is 2nd option
Their medians must be also be equal
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option (d)
None of the above
Step-by-step explanation:
If two groups of numbers have the same mean, then
it is not compulsary that their standard deviations, medians and modes must also be equal
One of the most common tests in statistics, the t-test, is used to determine whether the means of two groups are equal to each other. The assumption for the test is that both groups are sampled from normal distributions with equal variances.
hence ,
option (d)
None of the above
#Learn more:
If % means +, -means % , * means - ,and + means *, then
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