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Approximate the Sample Variance Given the Following Frequency Distribution A)135
B)181

Question 43

Multiple Choice

Approximate the sample variance given the following frequency distribution.
 Class  Frequency 0911101910202918303915404913\begin{array} { c c } \hline \text { Class } & \text { Frequency } \\\hline 0 - 9 & 11 \\10 - 19 & 10 \\20 - 29 & 18 \\30 - 39 & 15 \\40 - 49 & 13 \\\hline\end{array}


A) 13.5
B) 181.5
C) 178.8
D) 13.4

Correct Answer:

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