The Test Scores of 40 Students Are Summarized in the Frequency

question 90

Multiple Choice

The test scores of 40 students are summarized in the frequency distribution below. Find the grouped mean rounded to the nearest tenth. $$\begin{array} { c | c } \text { Score } & \text { Students } \\\hline 50 - 59 & 8 \\60 - 69 & 6 \\70 - 79 & 7 \\80 - 89 & 5 \\90 - 99 & 14\end{array}$$

• A) 69.6
• B) 73.4
• C) 74.5
• D) 77.3