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प्रश्न
Find the median of 21, 21, 22, 23, 23, 24, 24, 24, 24, 25 and 25
उत्तर
Given data = 21, 21, 22, 23, 23, 24, 24, 24, 24, 25 and 25
Clearly, middle term is 24.
∴ Median = 24
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संबंधित प्रश्न
Marks obtained by 40 students in a short assessment is given below, where a and b are two missing data.
| Marks | 5 | 6 | 7 | 8 | 9 |
| Number of Students | 6 | a | 16 | 13 | b |
If the mean of the distribution is 7.2, find a and b.
The following are the marks obtained by 70 boys in a class test:
| Marks | No. of boys |
| 30 – 40 | 10 |
| 40 – 50 | 12 |
| 50 – 60 | 14 |
| 60 – 70 | 12 |
| 70 – 80 | 9 |
| 80 – 90 | 7 |
| 90 – 100 | 6 |
Calculate the mean by:
Short-cut method
Find the mode of the following data:
7, 9, 8, 7, 7, 6, 8, 10, 7 and 6
The mean of the following distribution in 52 and the frequency of class interval 30-40 'f' find f
| C.I | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |
| freq | 5 | 3 | f | 7 | 2 | 6 | 13 |
Find the mode of the following frequency distribution:
| Pocket money per week in Rs | 25 | 50 | 75 | 100 | 125 | 150 |
| No. of students | 4 | 7 | 13 | 18 | 6 | 2 |
Find the median of:
233, 173, 189, 208, 194, 204, 194, 185, 200 and 220.
The mean of five numbers is 27. If one number is excluded, the mean of the remaining numbers is 25. Find the excluded number.
The mean of 5 numbers is 27. If one new number is included, the new mean is 25. Find the included number.
Find the mean of: all prime numbers upto 30
Median of the data may or may not be from the given data.
