Mean as Equal Sharing

Mean as Equal Sharing

The mean is the total shared equally between the number of values. It can be more useful than one single result, but it must be interpreted carefully. A weighted mean is an enrichment idea: it is only needed when some values count more than others. For Grade 7 assessment practice, master ordinary mean, median, mode and range first.

Worked example

Five quiz scores total 340. If each learner had an equal share, $340\div5=68$, so the mean score is 68.

Exam method

1. Add every value once. 2. Count how many values there are. 3. Divide total by count and state what the mean represents.