Which of the following statements are true a If each of
Which of the following statements are true?
a. If each of 25 sample values is equal to 20 min, the standard deviation of the sample is 0 min.
b. For any set of sample values, the standard deviation can never be a negative value.
c. If the standard deviation of a sample is 3 kg, then the variance is 9 kg.
d. If the variance of a sample is 16 sec2, then the standard deviation is 4 sec.
e. If the standard deviation of a sample is 25 cm, then the variance is 5 cm2.
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