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प्रश्न
Using the data, given below, construct a frequency distribution table:
9, 17, 12, 20, 9, 18, 25, 17, 19, 9, 12, 9, 12, 18, 17, 19, 20, 25, 9 and 12.
Now answer the following:
(i) How many numbers are less than 19?
(ii) How many numbers are more than 20?
(iii) Which of the numbers, given above, is occurring most frequently?
उत्तर
The required frequency table will be as shown below:
| Marks | Tally marks | Frequency |
| 9 | |||| | 5 |
| 12 | |||| | 4 |
| 17 | ||| | 3 |
| 18 | || | 2 |
| 19 | || | 2 |
| 20 | || | 2 |
| 25 | || | 2 |
| Total | 20 |
(i) There are 14 numbers are less than 19.
(ii) There are 2 numbers more than 20.
(iii) 9 is occurring most frequently i.e. 5 times.
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संबंधित प्रश्न
Marks scored by 30 students of class VI are as given below:
38, 46, 33, 45, 63, 53, 40, 85, 52, 75, 60, 73, 62, 22, 69, 43, 45, 33, 47, 41, 29, 43, 37, 49, 83, 44, 55, 22, 35 and 45. State:
(i) the highest marks scored.
(ii) the lowest marks scored.
(iii) the range of marks.
For the following raw data, form a discrete frequency distribution:
30, 32, 32, 28, 34, 34, 32, 30, 30, 32, 32, 34, 30, 32, 32, 28, 32, 30, 28, 30, 32, 32, 30, 28 and 30.
Define: data
Rearrange the following raw data in descending order:
5.3, 5.2, 5.1, 5.7, 5.6, 6.0, 5.5, 5.9, 5.8, 6.1, 5.5, 5.8, 5.7, 5.9 and 5.4. Then write the:
(i) highest value
(ii) lowest value
(iii) range of values
Represent the following data in the form of a frequency distribution:
52, 56, 72, 68, 52, 68, 52, 68, 52, 60, 56, 72, 56, 60, 64, 56, 48, 48, 64 and 64
In a study of number of accidents per day, the observations for 30 days were obtained as follows:
| 6 | 3 | 5 | 6 | 4 | 3 | 2 | 5 | 4 | 2 |
| 4 | 0 | 5 | 3 | 6 | 1 | 5 | 5 | 2 | 6 |
| 2 | 1 | 2 | 2 | 0 | 5 | 4 | 6 | 1 | 6 |
Construct a suitable frequency distribution table.
The following data represents the weekly wages (in ₹) of 15 workers in a factory:
900, 850, 800, 850, 800, 750, 950, 900, 950, 800, 750, 900, 750, 800 and 850.
Prepare a frequency distribution table. Now find,
(i) how many workers are getting less than ₹850 per week?
(ii) how many workers are getting more than ₹800 per week?
Using the following data, construct a frequency distribution table:
46, 44, 42, 54, 52, 60, 50, 58, 56, 62, 50, 56, 54, 58 and 48.
Now answer the following:
- What is the range of the numbers?
- How many numbers are greater than 50?
- How many numbers are between 40 and 50?
