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प्रश्न
Construct a grouped frequency table from the following data of the daily wages earned by 60 labourers in a company. Take each class size as 7.
25, 26, 34, 48, 39, 16, 55, 28, 37, 42, 45, 55, 28, 54, 53, 18, 35, 47, 44, 28, 55, 45, 39, 54, 21, 49, 45, 38, 29, 53, 48, 44, 15, 28, 14, 32, 15, 44, 14, 15, 16, 41, 33, 52, 29, 34, 51, 22, 19, 37, 44, 25, 48, 38, 24, 52, 51, 42, 32, 27.
उत्तर
Minimum value of variate = 14
Maximum value of variate = 55
∴ Range
= 55 − 14
= 41
Class size = 7
∴ No. Of class intervals
= `(41)/(7)`
= 6
| Class | Tally Marks | Frequency |
| 14 - 21 | IIII IIII | 9 |
| 21 - 28 | IIII II | 7 |
| 28 - 35 | IIII IIII I | 11 |
| 35 - 42 | IIII III | 8 |
| 42 - 49 | IIII IIII III | 13 |
| 49 - 56 | IIII IIII II | 12 |
| Total | 60 |
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संबंधित प्रश्न
The mark obtained by the students in a class test are given below:
31, 12, 28, 45, 32, 16, 49, 12, 18, 26, 34, 39, 29, 28, 25, 46, 32, 13, 14, 26, 25, 34, 23, 23, 25, 45, 33, 22, 18, 37, 26, 19, 20, 30, 28, 38, 42, 21, 36, 19, 20, 40, 48, 15, 46, 26, 23, 33, 47, 40.
Arrange the above marks in classes each with a class size of 5 and answer the following:
(i) what is the highest score?
(ii) What is the lowest score?
(iii) What is the range?
(iv) If the pass mark is 20, how many students failed/
(v) How many students got 40 or more marks?
The runs scored by a cricket player in the last 30 innings are:
75, 125, 36, 89, 154, 56, 12, 28, 96, 142, 78, 54, 30, 88, 116, 104, 55, 84, 10, 29, 31, 08, 24, 136, 117, 22, 99, 80, 112, 35.
Arrange these scores in an ascending order and answer the following:
- Find the highest score.
- Find the number of centuries scored by him.
- Find the number of times he scored over 50.
- Find the number of times he failed to score a 50.
