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प्रश्न
Find the mode of the following frequency distribution:
| Hrs. Spent daily in studies | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 |
| No. of students | 8 | 7 | 3 | 5 | 10 | 6 | 3 | 4 |
उत्तर
Mode = 5 because it occurs maximum number of times i.e. 10
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संबंधित प्रश्न
Using step-deviation method, calculate the mean marks of the following distribution.
| C.I. | 50 – 55 | 55 – 60 | 60 – 65 | 65 – 70 | 70 – 75 | 75 – 80 | 80 – 85 | 85 – 90 |
| Frequency | 5 | 20 | 10 | 10 | 9 | 6 | 12 | 8 |
At a shooting competition the score of a competitor were as given below:
| Score | 0 | 1 | 2 | 3 | 4 | 5 |
| No. of shots | 0 | 3 | 6 | 4 | 7 | 5 |
- What was his modal score?
- What was his median score?
- What was his total score?
- What was his mean score?
Find the arithmetic mean (correct to the nearest whole number) by using step-deviation method.
| x | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| f | 20 | 43 | 75 | 67 | 72 | 45 | 39 | 9 | 8 | 6 |
Find the mean of the following frequency distribution by the step deviation method :
| Class | 0-20 | 20-40 | 40-60 | 60-80 | 80-100 | 100-120 | 120-140 |
| Frequency | 12 | 24 | 52 | 88 | 66 | 42 | 16 |
Find the median of:
241, 243, 347, 350, 327, 299, 261, 292, 271, 258 and 257
If the mean of 6, 4, 7, p and 10 is 8, find the value of p.
Find the median of 17, 23, 36, 12, 18, 23, 40 and 20
Find the median of the following sets of numbers.
25, 11, 15, 10, 17, 6, 5, 12.
3, 8, 10, x, 14, 16, 18, 20 are in the ascending order and their median is 13. Calculate the numerical value of x.
If the median of a, 2a, 4a, 6a, 9a is 8, then find the value of a is
