TS EAMCET · Maths · Statistics
The mean deviation about the mean for the following data, is
| xi | 2 | 4 | 5 | 7 | 9 |
| fi | 2 | 4 | 10 | 8 | 6 |
- A 6.3
- B 1.5
- C 2.83
- D 1.733
Answer & Solution
Correct Answer
(D) 1.733
Step-by-step Solution
Detailed explanation
We have, the following data. Here, mean \( \text { (र) }=\frac{\sum x_1 f_i}{\sum f_i}=\frac{4+16+50+56+54}{2+4+10+8+6}=\frac{180}{30}=6 \) \(\therefore\) Mean deviation about mean \(=\frac{\sum f_i\left|x_{\dot{i}}-\bar{x}\right|}{\sum f_{\dot{i}}}\)…
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