Mathematics
In a school, 100 pupils have heights as tabulated below :
| Height (in cm) | No. of pupils |
|---|---|
| 121 - 130 | 12 |
| 131 - 140 | 16 |
| 141 - 150 | 30 |
| 151 - 160 | 20 |
| 161 - 170 | 14 |
| 171 - 180 | 8 |
Find the median height by drawing an ogive.
Related Questions
The weight of 60 boys are given in the following distribution table :
Weight (kg) No. of boys 37 10 38 14 39 18 40 12 41 6 Find :
(i) Median
(ii) Lower quartile
(iii) Upper quartile
(iv) Inter quartile range.
From the following cumulative frequency table draw ogive and then use it to find :
(i) Median
(ii) Lower quartile
(iii) Upper quartile
Marks (less than) Cumulative frequency 10 5 20 24 30 37 40 40 50 42 60 48 70 70 80 77 90 79 100 80 Find the mode of following data, using a histogram :
Class Frequency 0 - 10 5 10 - 20 12 20 - 30 20 30 - 40 9 40 - 50 4 The following table shows the expenditure of 60 boys on books. Find the mode of their expenditure.
Expenditure (₹) No. of students 20 - 25 4 25 - 30 7 30 - 35 23 35 - 40 18 40 - 45 6 45 - 50 2