#### Given below are the marks secured by 35 students in a surprise test:

41, 32, 35, 21, 11, 47, 42, 00, 05, 18, 25, 24, 29, 38, 30, 04, 14, 24, 34, 44, 48, 33, 36, 38, 41, 48, 08, 34, 39, 11, 13, 27, 26, 43, 03.

Taking class intervals 0-10, 10-20, …….. construct frequency distribution table. Find the number of students obtaining below 20 marks.

**Solution:**

#### The electricity bills (in ?) of 40 houses in a locality are given below:

78, 87,81,52, 59, 65, 101, 108, 115, 95, 98, 65,62, 121, 128, 63,76, 84, 89,91,65, 101,95,81, 87, 105, 129, 92, 75, 105, 78, 72, 107, 116, 127, 100, 80, 82, 61, 118 Construct a grouped frequency distribution table of class size 10.

Class intervals (Electricity bill in ?) Tally marks Frequency (Number of houses)

**Solution:**

#### Draw a histogram for the frequency table made for data in above Question, and answer the following questions:

(i) Which group has the maximum number of houses?

(ii) How many houses pay less than ₹ 100?

(iii) How many houses pay ₹ 100 or more?

**Solution:**

**More Solutions:**

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