Question
Find the mean deviation taking deviation from the mean for the given individual observation
10, 20, 30, 40, 50, 60, 70
10, 20, 30, 40, 50, 60, 70
| S. No. | X | $|\text{D}|=|\text{X}-\bar{\text{X}}|\bar{\text{X}}=40$ |
| 1 | 10 | 30 |
| 2 | 20 | 20 |
| 3 | 30 | 10 |
| 4 | 40 | 0 |
| 5 | 50 | 10 |
| 6 | 60 | 20 |
| 7 | 70 | 30 |
| n = 7 | $\sum\text{X}=280$ | $\sum|\text{D}|=120$ |
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| School | Mean Income (in ₹) | Standard Deviation (in ₹) |
| A | 800 | 120 |
| B | 900 | 135 |
| Variable Input (Units) | 1 | 2 | 3 | 4 | 5 | 6 |
| Total Product (Units) | 10 | 22 | 32 | 40 | 40 | 35 |
| Output (Units) | Average Revenue (₹) | Total Revenue (₹) | Marginal Revenue (₹) |
| 1 | 20 | - | - |
| 2 | - | 36 | - |
| 3 | - | - | 9 |
| 4 | 13 | 52 | - |
| 5 | - | - | -2 |