- 10 Marks
QTB – May 2017 – L1 – SB – Q6b – Data Collection Analysis
Calculate the mode and Pearson's coefficient of skewness for a given distribution of marks.
Question
The table below shows the marks (%) scored in QTB by some candidates who wrote the ICAN Professional examination in May 2016 diet:
| Marks % | Number of Candidates |
|---|---|
| 20–29 | 7 |
| 30–39 | 17 |
| 40–49 | 13 |
| 50–59 | 9 |
| 60–69 | 4 |
If the mean mark is 41.7%, calculate the mode and Pearson’s coefficient of skewness. (10 Marks)
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