Mathematics
Find the median of the following frequency distribution:
| Variate | Frequency |
|---|---|
| 17 | 5 |
| 20 | 9 |
| 15 | 3 |
| 22 | 4 |
| 30 | 10 |
| 25 | 6 |
Related Questions
(i) The median of the observations 11, 12, 14, 18, (x + 4), 30, 32, 35, 41 arranged in ascending order is 24. Find the value of x.
(ii) If 10, 13, 15, 18, x + 1, x + 3, 31, 36, 38, 42 are the observations arranged in ascending order with median 28, find the value of x.
Calculate the median of the following frequency distribution:
Weight (in nearest kg) Number of students 45 8 46 5 48 6 50 9 52 7 54 4 55 2 50 persons were examined through X-ray and observations were noted as under:
Diameter of heart (in mm) Number of patients 120 5 121 8 122 12 123 9 124 6 125 10 Find :
(i) The mean diameter of heart,
(ii) The median diameter of heart.
The marks scored by 15 students in a class test are:
14, 20, 8, 17, 25, 27, 20, 16, 25, 0, 5, 19, 17, 30, 6
Find :
(i) Median
(ii) Lower quartile (Q1)
(iii) Upper quartile (Q3)
(iv) Interquartile range
(v) Semi-interquartile range