1) Consider a sample with data values of 5, 3, 10, 2, 3. Compute the standard deviation for this sample. Round to 0.001 of the correct value.

2) Consider a sample with data values of 4, 15, 5, 18, 17. Compute the coefficient of variation for this sample. Do not enter the percentage sign. If you get 64.132% for example, enter 64.132. Round to 0.001 of the correct value.

3) Consider a population with data values of 17, 15, 19, 12, 13. Compute the variance for this population. Round to 0.001 of the correct value.

4)

Below you are given the frequency distribution for the examination scores students. Calculate the relative frequency for the class 70-79. Round to 0.001 of the correct value.

Class	Frequency
50-59	10
60-69	13
70-79	17
80-89	19
90-100	6