If the masses of the school's Karate team players in kilograms are given in the following table:
a) Calculate the arithmetic mean of the masses of these players.
| Mass (kg) | 71 | 72 | 73 | 74 | 75 | 76 | 77 |
|---|---|---|---|---|---|---|---|
| Frequency | 1 | 2 | 4 | 3 | 5 | 3 | 2 |
\[
\text{Mean} = \frac{1486}{20} = \boxed{74.3} \text{ kg}
\]
MR/Nasef.N
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