Question

Using the data in Exercise 3.5, construct a frequency distribution.
a. Determine the approximate values of the mean and standard deviation.
b. Compare the approximate values from part (a) with the actual values.
c. Construct a frequency distribution with twice as many classes as before, then repeat parts (a) and (b). Have the approximations improved?
d. If you were to construct a “frequency distribution” in which each data value was at the midpoint of its own class, what values do you think the “approximations” would have? Explain.


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  • CreatedSeptember 08, 2015
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