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प्रश्न
38 people donated to an organisation working for differently abled persons. The amount in rupees were as follows:
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.
- By taking classes 100-149, 150-199, 200-249... prepare grouped frequency distribution table.
- From the table, find the number of people who donated rupees 350 or more.
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उत्तर
Given:
38 people donated to an organisation working for differently abled persons. The amount in rupees were as follows:
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) The grouped frequency distribution table of the given data is as follows:
| Class interval | Tally marks | Frequency |
| 100 - 149 | `cancel(bb|bb|bb|bb|)` `bb|bb|` | 7 |
| 150 - 199 | `cancel(bb|bb|bb|bb|)` `cancel(bb|bb|bb|bb|)` | 10 |
| 200 - 249 | `bb|bb|bb|` | 3 |
| 250 - 299 | `cancel(bb|bb|bb|bb|)` | 5 |
| 300 - 349 | `bb|bb|` | 2 |
| 350 - 399 | `bb|bb|bb|bb|` | 4 |
| 400 - 449 | `bb|bb|bb|bb|` | 4 |
| 450 - 499 | `bb|bb|` | 2 |
| 500 - 549 | `bb|` | 1 |
| Total | 38 |
(ii) As, 4 + 4 + 2 + 1 = 11
So, the number of people who donated rupees 350 or more is 11.
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संबंधित प्रश्न
Find the class-mark of the class 35-40.
Complete the Following Table.
| Classes (age) | Tally marks | Frequency (No. of students) |
| 12-13 | `cancel(bb|bb|bb|bb|)` | `square` |
| 13-14 | `cancel(bb|bb|bb|bb|)` `cancel(bb|bb|bb|bb|)` `bb|bb|bb|bb|` | `square` |
| 14-15 | `square` | `square` |
| 15-16 | `bb|bb|bb|bb|` | `square` |
| N = ∑f = 35 |
In a village, the milk was collected from 50 milkmen at a collection center in litres as given below:
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By taking suitable classes, prepare grouped frequency distribution table.
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Construct a frequency table from the following data:
| Marks | No. of students |
| less than 10 | 6 |
| less than 20 | 15 |
| less than 30 | 30 |
| less than 40 | 39 |
| less than 50 | 53 |
| less than 60 | 70 |
Construct a cumulative frequency distribution table from the frequency table given below:
( i )
| Class Interval | Frequency |
| 0 - 8 | 9 |
| 8 - 16 | 13 |
| 16 - 24 | 12 |
| 24 - 32 | 7 |
| 32 - 40 | 15 |
( ii )
| Class Interval | Frequency |
| 1 - 10 | 12 |
| 11 - 20 | 18 |
| 21 - 30 | 23 |
| 31 - 40 | 15 |
| 41 - 50 | 10 |
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Represent the following data in ungrouped frequency table which gives the number of children in 25 families.
1, 3, 0, 2, 5, 2, 3, 4, 1, 0, 5, 4, 3, 1, 3, 2, 5, 2, 1, 1, 2, 6, 2, 1, 4
The number of times an observation occurs in the given data is called ________
Inclusive series is a _________ series
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The number of times a particular observation occurs in a given data is called its ______.
The class size of the interval 80 – 85 is ______.
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If the fifth class interval is 60 – 65, fourth class interval is 55 – 60, then the first-class interval is 45 – 50.
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39, 38, 36, 38, 40, 42, 43, 44, 33, 33, 31, 45, 46, 38, 37, 31, 30, 39, 41, 41, 46, 36, 35, 34, 39, 43, 32, 37, 29, 26.
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- Which class has the least frequency?
- Which class has the maximum frequency?
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- Which weight group has the highest frequency?
