StatisticsdrillWeighted mean
A statistics problem from Statisticsdrill. Solve it with one answer box, with a fresh sample on every attempt and the worked steps and spreadsheet function in the answer, and it is checked the moment you submit.
The task
A buyer purchased printer paper (per case) from 3 suppliers: 52 units at $39.50, 59 units at $30.50, 32 units at $24.75. What was the average price paid per unit across all units bought? Give dollars and cents.
What this problem teaches
The formula: Weighted mean = Σ(w × x) / Σw.
A hint if you get stuck
Weight each price by its quantity: total spent divided by total units.
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