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Find the mean of the following distribution:
$x$ | 10 | 12 | 20 | 25 | 35 |
$f$ | 3 | 10 | 15 | 7 | 5 |
To do:
We have to find the mean for the given distribution.
Solution:
$x$ | $f$ | $f \times\ x$ |
10 | 3 | 30 |
12 | 10 | 120 |
20 | 15 | 300 |
25 | 7 | 175 |
35 | 5 | 175 |
Total | 40 | 800 |
Mean$=\frac{\sum fx}{\sum f}$
Therefore,
Mean $=\frac{800}{40}$
$=20$
The mean of the given distribution is $20$.
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