Basic Statistics - Old Questions
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6. Write the properties of correlation. A study relates aptitude scores to productivity in a factory after six months of training. The figures for six randomly selected workers are:
| Aptitude Scores (X) | 9 | 18 | 18 | 20 | 20 | 23 |
|---|---|---|---|---|---|---|
| Productivity Index (Y) | 12 | 33 | 23 | 42 | 29 | 30 |
Find the coefficient of correlation between aptitude score and productivity index and comment on the value. Also, find the coefficient of variation for each variable. [5]
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