Mathematics
Using the step-deviation method, find the mean from the following data :
| xi | fi |
|---|---|
| 18 | 170 |
| 19 | 320 |
| 20 | 530 |
| 21 | 700 |
| 22 | 230 |
| 23 | 140 |
| 24 | 110 |
Related Questions
The mean age of a group of 40 students is 17.45 years. Find the missing frequencies.
Age (in years) Number of students 15 3 16 ? 17 9 18 11 19 ? 20 3 Using the assumed mean method, calculate the mean weekly wage from the following frequency distribution :
Weekly wages (in ₹) Number of workers 950 24 1000 18 1050 13 1100 15 1250 20 1500 11 1600 9 Find the median of :
(i) 15, 6, 16, 8, 22, 21, 9, 18, 25
(ii) 10, 75, 3, 15, 9, 47, 12, 48, 4, 81, 17, 27
(iii) 55, 60, 35 ,51, 29, 63, 72, 91, 85, 82
The runs scored by 11 members of a cricket team are :
26, 38, 53, 18, 66, 72, 0, 47, 32, 7, 35
Find the median score.