A frequency table shows the scores with frequencies . What is the median score?
Answer and explanation
Correct answer: A.
- Step 1: There are values, so the median is the mean of the 10th and 11th.
- Step 2: Cumulative frequencies are , so the 10th and 11th values both lie in the score group.
- Step 3: The median is .
Answer
.
Why not the others: : takes the middle of the four score values instead of the middle of the data. : is the mean score, not the median. : is the highest frequency, which belongs to the mode's frequency not the median.
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