Question:

Directions:
Directions for the following 4 questions: The table below shows the sales (in thousands of units) of four products P, Q, R and S of a company over three years. Study the table and answer the questions that follow. Year | P | Q | R | S 2021 | 20 | 30 | 25 | 15 2022 | 25 | 35 | 20 | 20 2023 | 30 | 40 | 30 | 25

What is the average yearly sales (in thousands) of product S over the three years?

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Try assuming a trial average and see whether the deviations of the three yearly values above and below it cancel out to zero - that confirms the true average.
Updated On: Jul 8, 2026
  • 18
  • 22
  • 25
  • 20
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The Correct Option is D

Solution and Explanation

Product S totals \(15+20+25=60\) over three years. Average \(=\frac{60}{3}=20\) thousand units. Correct option: 20.
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