The mean marks of the following distribution is :
The mean marks of the following distribution is :
Detailed Solution & Logic
Correct Answer:
30
We are given a discrete distribution.
Use the formula:
Mean = $\frac{\sum f x}{\sum f}$
Step 1: Compute $fx$
- 10 × 14 = 140
- 67 × 13 = 871
- 23 × 2 = 46
- 19 × 17 = 323
Step 2: Compute totals
$\sum fx = 140 + 871 + 46 + 323 = 1380$
$\sum f = 14 + 13 + 2 + 17 = 46$
Step 3: Mean
Mean = $\frac{1380}{46} = 30$
Answer: 30
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