Mathematics
The following table gives the weekly wages (in ₹) of workers in a factory :
| Weekly wages (in ₹) | No. of workers |
|---|---|
| 50 - 55 | 5 |
| 55 - 60 | 20 |
| 60 - 65 | 10 |
| 65 - 70 | 10 |
| 70 - 75 | 9 |
| 75 - 80 | 6 |
| 80 - 85 | 12 |
| 85 - 90 | 8 |
Calculate :
(i) the mean.
(ii) the modal class.
(iii) the number of workers getting weekly wages below ₹80.
(iv) the number of workers getting ₹65 or more but less than ₹85 as weekly wages.
Related Questions
The marks obtained by 30 students in a class assessment of 5 marks is given below :
Marks No. of students 0 1 1 3 2 6 3 10 4 5 5 5 Calculate the mean, median and mode of the above distribution.
The distribution table given below shows the marks obtained by 25 students in an aptitude test. Find the mean, median and mode of the distribution.
Marks obtained No. of students 5 3 6 9 7 6 8 4 9 2 10 1 Draw a histogram for the following frequency distribution and find the mode from the graph :
Class Frequency 0 - 5 2 5 - 10 5 10 - 15 18 15 - 20 14 20 - 25 8 25 - 30 5 A mathematics aptitude test of 50 students was recorded as follows :
Marks No. of students 50 - 60 4 60 - 70 8 70 - 80 14 80 - 90 19 90 - 100 5 Draw a histogram for the above data using a graph paper and locate the mode.