Errors on a Typing Test The distribution of the number of
Chapter 3, Problem 24(choose chapter or problem)
Errors on a Typing Test The distribution of the number of errors that 10 students made on a typing test is shown. Errors Frequency 02 1 35 3 68 4 911 1 1214 1 Find each of these. a. Mean 6.4 c. Variance 11.6 b. Modal class 68 d. Standard deviation 3.4
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