xi | 5 | 10 | 15 | 20 | 25 |
fi | 7 | 4 | 6 | 3 | 5 |
Answer:
xi | fi | Cumulative Frequency (xifi) | |di| = |xi – Mean| | fi |di| |
5 | 7 | 35 | 9 | 63 |
10 | 4 | 40 | 4 | 16 |
15 | 6 | 90 | 1 | 6 |
20 | 3 | 60 | 6 | 18 |
25 | 5 | 125 | 11 | 55 |
Total = 25 | Total = 350 | Total = 158 |
= 350/25
= 14
= 158/25
= 6.32
∴ The mean deviation is 6.32