Question 1007874: Is it possible to calculate the actual standard deviation for the following data? Please explain.
Class, Frequency f
21-25, 5
26-30, 3
31-35, 8
36-40, 12
41-45, 21
46-50, 38
51-55, 35
56-60, 20
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! No, since you've grouped the data into classes you've eliminated the actual value and have averaged all the values in the class.
You can estimate the standard deviation but can't calculate the actual standard deviation.
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