Answer :

**To Find:** Mean of the data

**Given:** Frequency distribution of the data

**Concept Used:**

Where x = observation and f = frequency

**Explanation:**

Therefore,

Mean = 25

= 25

**Hence, mean of the data is 25.**

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PREVIOUSThe time taken, in seconds, to solve a problem by each of 25 pupils is as follows:16, 20, 26, 27, 28, 30, 33, 37, 38, 40, 42, 43, 46, 46, 46, 48, 49, 50, 53, 58, 59, 60, 64, 52, 20(a) Construct a frequency distribution for these data, using a class interval of 10 seconds.(b) Draw a histogram to represent the frequency distribution.NEXTFind the value of p for the following distribution whose mean is 16.6.

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