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प्रश्न
Below is the histogram depicting marks obtained by 43 students of a class:
(i) Write the number of students getting the highest marks.
(ii) What is the class size?
उत्तर
(i) In the given histogram, the interval with the highest marks is 90-100.
Three students are there in this interval because the height of the rectangle (90-100) is 3 units.
(ii) The class intervals are 10-20, 20-30, ..., 90-100. So, the class size is 10.
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संबंधित प्रश्न
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| 20 — 25 | 2 |
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The following is the frequency distribution of waiting time at ATM centre; draw histogram to represent the data:
| Waiting time (in seconds) |
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| 0 -30 | 15 |
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| 90 - 120 | 50 |
| 120 - 150 | 5 |
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| Frequency | 24 | 16 | 09 | 15 | 20 |
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| No. of students | 14 | 20 | 24 | 22 | 16 |
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| Families | 240 | 300 | 450 | 350 | 160 |
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| Years | No. of workshops |
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| 1996−1997 | 30 |
| 1997−1998 | 42 |
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| 10 – 20 | x |
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| 20-25 | 2 |
| 25-30 | 5 |
| 30-35 | 8 |
| 35-40 | 12 |
| 40-45 | 10 |
| 45-50 | 7 |
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| 440 - 460 | 2 |
| 460 - 480 | 4 |
| 480 - 500 | 3 |
| 500 - 520 | 5 |
| 520 - 540 | 3 |
| 540 - 560 | 2 |
| 560 - 580 | 1 |
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Try yourself
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| 20 - 40 | 25 |
| 40 - 60 | 65 |
| 60 - 80 | 80 |
| 80 - 100 | 15 |
