Mathematics
| Category | Wages in ₹ per day | No. of workers |
|---|---|---|
| A | 500 | 2 |
| B | 600 | 4 |
| C | 700 | 8 |
| D | 800 | 12 |
| E | 900 | 10 |
| F | 1000 | 6 |
| G | 1100 | 8 |
(i) Calculate the mean wage, correct to the nearest rupee.
(ii) If the number of workers in each category is doubled, what would be the new mean wage?
Related Questions
The contents of 100 matchboxes were checked to determine the number of matches they contained.
No. of matches No. of boxes 35 6 36 10 37 18 38 25 39 21 40 12 41 8 (i) Calculate, correct to one decimal place, the mean number of matches per box.
(ii) Determine how many extra matches would have to be added to the total contents of the 100 boxes to bring the mean upto exactly 39 matches.
Find the mean for the following distribution by short cut method:
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Marks No. of students 5 6 6 a 7 16 8 13 9 b If the mean of the distribution is 7.2, find a and b.