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Grouped Frequency Distribution

The students ...

Question

The students of a school collected certain amounts for the 'Flood Relief Fund'. The amounts are in rupees.
Prepare a grouped frequency distribution table.

57, 89, 62, 115, 200, 150, 130, 140, 167, 212, 117, 69, 84, 189, 207, 178, 108, 95, 142, 182, 202, 101, 88, 123, 132, 205, 195, 66, 74, 190, 210, 183, 174, 165, 156, 217, 59, 94, 118, 181, 127, 172, 169, 207, 135.

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Solution

The frequency distribution table is given below:

Class Tally Marks Frequency (f)

50 $-$ 70 5

70 $-$ 90 4

90 $-$ 110 4

110 $-$ 130 5

130 $-$ 150 5

150 $-$ 170 5

170 $-$ 190 7

190 $-$ 210 7

210 $-$ 230 3

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Q. Collect the data of weights of students in your class. prepare a grouped frequency distribution table.

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101, 500, 401, 201, 301, 160, 210, 125, 175, 190, 450, 151, 101, 351, 251, 451, 151, 260, 360, 410, 150, 125, 161, 195, 351, 170, 225, 260, 290, 310, 360, 425, 420, 100, 105, 170, 250, 100.

(i) By taking classes 100-149, 150-199, 200-249... prepare grouped frequency distribution table.

(ii) From the table, find the number of people who donated rupees 350 or more.

Q. A school has collected ₹14,000 from 56 students for the Prime Minister's relief fund. If each student paid the same amount, how much is each student's contribution?

Q. The distribution of money collected by students for a flood relief fund is shown.

Money (in Rs.)	0-10	10-20	20-30	30-40	40-50
No. of students	5	7	5	2	6

Using the direct method, find the mean amount collected by a student.

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