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प्रश्न
Find the median of the following:
11, 8, 15, 5, 9, 4, 19, 6, 18
उत्तर
11, 8, 15, 5, 9, 4, 19, 6, 18
Arranging the given data in descending order:
19, 18, 15, 11, 9, 8, 6, 5, 4
The middle term is 9 which is 5th term
Therefore, Median of numbers = 9.
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संबंधित प्रश्न
The marks of 20 students in a test were as follows:
2, 6, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 18, 19 and 20.
Calculate:
- the mean
- the median
- the mode
The daily wages of 80 workers in a building project are given below :
| Wages (Rs) | No.of workers |
| 30-40 | 6 |
| 40-50 | 10 |
| 50-60 | 15 |
| 60-70 | 19 |
| 70-80 | 12 |
| 80-90 | 8 |
| 90-100 | 6 |
| 100-110 | 4 |
Using graph paper, draw an ogive for the above distribution. Use your ogive, to estimate :
(1) the mediam wages of workers
(2) the percentage of workers who earn more than Rs 75 a day.
(3) the upper quartile wages of the workers
(4) the lower quartile wages of the workers
(5) Inter quartile range
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Find the mean of the following frequency distribution by the step deviation method :
| Class | 100-110 | 110-120 | 120-130 | 130-140 | 140-150 |
| Frequency | 15 | 18 | 32 | 25 | 10 |
Find the median of the following:
3x, x+5, x+7, x+9, x+11, x+13
The following data have been arranged in ascending order. If their median is 63, find the value of x.
34, 37, 53, 55, x, x + 2, 77, 83, 89 and 100.
Find the mean of first six natural numbers.
Find the mean of 35, 44, 31, 57, 38, 29, 26,36, 41 and 43.
Find the median of 3.2, 4.8, 5.6, 5.6, 7.3, 8.9 and 9.1
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