Statistics

Definition of Mean: The arithmetic mean (average) is the sum of all observations divided by the total number of observations.
Identify Data: $X = {2, 4, 6, 8, 10}$ , so $n = 5$ .
Summation:
- $\sum X = 2 + 4 + 6 + 8 + 10 = 30$ .
Calculation:
- $M e an (\overset{x}{ˉ}) = \frac{30}{5} = 6$ .
Observation: In a symmetric AP, the mean is always the middle term.

This easy difficulty mathematics question is from the chapter statistics and probability, covering the topic of statistics. It appeared in the 2025 exam.

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