Ace the AP Psychology Test 2025 – Unlock Your Mind’s Potential!

Question: 1 / 530

What is the mean of a distribution?

The total sum of all scores

The middle score in a distribution

The most frequently occurring score

The arithmetic average of the distribution

The mean of a distribution is defined as the arithmetic average of all the scores in that distribution. To calculate the mean, you add together all of the individual scores and then divide that total by the number of scores. This gives a measure of central tendency that allows for understanding the overall performance or value within a set of data.

In contrast, the total sum of all scores represents simply the accumulated score without any mathematical processing to derive an average. The middle score in a distribution refers to the median, which is a different measure of central tendency and is used to represent the center value when scores are ordered. The most frequently occurring score is known as the mode, which again is distinct from the mean.

Thus, the arithmetic average captures the essence of the mean, making it the correct choice.

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