NCERT Class XI Mathematics - Statistics - Solutions
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Question : 5
Total: 34
| | 5 | 10 | 15 | 20 | 25 |
|---|---|---|---|---|---|
| | 7 | 4 | 6 | 3 | 5 |
Solution:
| | 5 | 10 | 15 | 20 | 25 | |
|---|---|---|---|---|---|---|
| | 7 | 4 | 6 | 3 | 5 | 25 |
| | 35 | 40 | 90 | 60 | 125 | 350 |
| | 9 | 4 | 1 | 6 | 11 | |
| 63 | 16 | 6 | 18 | 55 | 158 |
Mean
∴ Mean deviation about mean =
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