Mathematics
The table, given below, shows the frequency distribution of the weekly wages of the employees of a company :
| Weekly Wages (in ₹) | Number of employees |
|---|---|
| 800 - 899 | 22 |
| 900 - 999 | 27 |
| 1000 - 1099 | 23 |
| 1100 - 1199 | 18 |
| 1200 - 1299 | 15 |
Find :
(i) the lower limit of the fourth class.
(ii) the upper limit of the fifth class.
(iii) the class boundaries of the second class.
(iv) the class mark of the first class.
(v) the class size of the third class.
(vi) cumulative frequency of the fourth class.
Related Questions
By taking classes 30 - 40, 40 - 50, 50 - 60, ……………, construct a frequency table for the following data :
65 34 74 49 52 35 71 55 61 40 56 38 52 56 52 33 60 35 49 37 53 50 44 30 62 50 47 45 47 50 63 61 54 58 47 64 37 38 44 42 47 55 70 33 75 49 47 30 60 69 Also, construct a combined histogram and frequency polygon for the distribution.
State, which of the following variables are continuous and which are discrete :
(i) marks scored in a test.
(i1) daily temperature of a city.
(iii) sizes of shoes.
(iv) distance covered by a train.
(v) time.
Find the mean of :
(i) 5, 15, 20, 8 and 12.
(ii) 28, 24, 37, 42, 56, 59, 67, 28, 15 and 32.
(a) Find the mean of the following data :
18, 33, 30, 21 and 13.
Also, find the sum of deviations of this data from the mean.
(b) If 150 is the mean of 200 observations and 100 is the mean of some 300 other observations, find the mean of the combination.