Discussion

What is the mode of the following set of scores ?

10, 15, 10, 18, 6, 18, 15, 8, 15

Answer: A

The mode is 15.

The mode is the value that occurs most often. Counting each score:

\[ \begin{aligned} 15 &: 3\ \text{times} \\ 10,\ 18 &: 2\ \text{times each} \\ 6,\ 8 &: 1\ \text{time each} \end{aligned} \]

15 appears most often, so it is the mode. 10 and 18 appear twice and are the trap, and 6 appears only once; it is simply the smallest score.

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