The weekly pocket expenses (in rupees) of 30 students of a class are given below :

62, 80, 110, 75, 84, 73, 60, 62, 100, 87, 78, 94, 117, 86, 65, 68, 90, 80, 118, 72, 95, 72, 103, 96, 64, 87, 85, 105, 115.

Construct a frequency table with class intervals 60 - 70 (where 70 is not included), 70 - 80, 80 - 90, etc.

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Solution

Frequency distribution table is given below :

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The weekly pocket expenses (in rupees) of 30 students of a class are given below: 62 ,80 ,110 , 75 , 84 , 73 , 60 , 62, 100 , 87 , 78 , 94 ,117, 86, 65, 68, 90, 80,118 ,72, 95, 72, 103, 96, 64, 94, 87, 85, 105, 115. Then which of the below frequency table is correct one?

73, 72, 58, 102, 84, 76, 82, 100, 70, 72, 81, 95, 105, 101, 63, 85, 82, 90, 54, 75, 92, 75, 84, 62, 85, 80, 52, 87, 91, 85, 80, 104, 106, 72, 57, 103, 78, 79, 91, 70, 108, 97, 88, 73, 67, 101, 96, 84, 53, 86

For the above data, prepare a grouped frequency distribution by inclusive ( non-over lapping) method taking 10 as the magnitude of class intervals

The weight (in grams) of $40$ oranges picked at random from a basket are as follows:

$50, 40, 60, 65, 45, 55, 30, 90, 75, 85, 70, 85, 75, 80, 100, 110, 70, 55, 30, 35, 45, 70, 80, 85, 95, 70, 60, 70, 75, 40, 100, 65, 60, 40, 100, 75, 110, 30, 84, 45 .$

Construct a frequency table as well as a cumulative frequency table.

The weekly pocket expenses (in rupees) of 30 students of a class are given below: 62 ,80 ,110 , 75 , 84 , 73 , 60 , 62, 100 , 87 , 78 , 94 ,117, 86, 65, 68, 90, 80,118 ,72, 95, 72, 103, 96, 64, 94, 87, 85, 105, 115. Construct a frequency table with class intervals 60 - 70 and so on. [3 MARKS]

Q. The marks obtained by 40 students of a class are given below: 80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60 and 60.
Construct a frequency distribution table.

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