Use the Grouped Data Formulas to Find the Indicated Mean

question 74

Multiple Choice

Use the grouped data formulas to find the indicated mean or standard deviation.
-For the following data set, approximate the sample standard deviation. $$\begin{array} { c | c } \text { Height (in inches) } & \text { Frequency } \\\hline 50 - 52 & 5 \\53 - 55 & 8 \\56 - 58 & 12 \\59 - 61 & 13 \\62 - 64 & 11\end{array}$$

• A)3.85
• B)1.86
• C)2.57
• D)0.98

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