# Statistical Methods-Data [ISS (Statistical Services) Statistics Paper I (Old Subjective Pattern)]: Questions 1 - 1 of 1

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## Question number: 1

» Statistical Methods » Data » Multivariate

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Appeared in Year: 2011

Essay Question▾

### Describe in Detail

The following are the frequencies in the given intervals:

 (0 - 2)

(2 - 5)

(5 - 10)

(10 - 15)

(15 - 18)

(18 - 20)

43

85

151

112

72

34

Draw the histogram of this data. Calculate the mean of the data from the frequency table.

### Explanation

The histogram of the frequencies is given where the widths of all classes are not equal.

 Class interval mid value Frequencies (0 - 2) 1 43 (2 - 5) 3.5 85 (5 - 10) 7.5 151 (10 - 15) 12.5 112 (15 - 18) 16.5 72 (18 - 20) 19 34

Hence, the mean of the distribution is

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