The heights of a group of people (in cm...

The heights of a group of people (in cm) are 121, 118, 115, 130, 100, 99, 84, 132, 88, 80, 98. The range of this data is

132

100

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Given below are are the heights (in cm) of 11 boys of a class: 146, 143, 148, 132, 128, 139, 140, 152, 154, 142, 149. the range of the given data is

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

The weights in grams of 50 apples picked at random from a consignment are as follows 106, 107, 76, 82, 109, 107, 115, 93, 187, 195, 123, 125, 111, 92, 86, 70, 126, 68, 130 129, 139 119, 115, 128, 100, 186, 84, 99, 118, 204, 111, 141, 136 123, 90, 11 98, 110, 78, 90, 107, 81, 131, 75, 84, 104, 110, 80, 118, 82. Form the grouped frequency table by dividing the variable range into intervals of equal width, each corresponding to 70 gms in such a way that mid-value of the first class corresponds to 70 gms.

Find the range of heights of ten students of a class. Heights of students are :- 120cm, 125 cm, 150cm, 110cm, 148cm, 143cm, 105cm, 149cm, 130cm, 115cm.

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