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प्रश्न
Construct a frequency distribution table for the following weights (in grams) of 35 mangoes, using the equal class intervals, one of them is 40 – 45 (45 not included).
30, 40, 45, 32, 43, 50, 55, 62, 70, 70, 61, 62, 53, 52, 50, 42, 35, 37, 53, 55, 65, 70, 73, 74, 45, 46, 58, 59, 60, 62, 74, 34, 35, 70, 68.
- How many classes are there in the frequency distribution table?
- Which weight group has the highest frequency?
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उत्तर
| Class interval | Tally marks | Frequency |
| 30 – 35 | `bb|bb|bb|` | 3 |
| 35 – 40 | `bb|bb|bb|` | 3 |
| 40 – 45 | `bb|bb|bb|` | 3 |
| 45 – 50 | `bb|bb|bb|` | 3 |
| 50 – 55 | `\cancel(bb|bb|bb|bb|)` | 5 |
| 55 – 60 | `bb|bb|bb|bb|` | 4 |
| 60 – 65 | `\cancel(bb|bb|bb|bb|)` | 5 |
| 65 – 70 | `bb|bb|` | 2 |
| 70 – 75 | `\cancel(bb|bb|bb|bb|) bb|bb|` | 7 |
| Total | 35 |
- There are total number of 9 classes in the frequency distribution table.
- The weight group 70 – 75 has the highest frequency i.e. 7.
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संबंधित प्रश्न
If the classes are 0-10, 10-20, 20-30... then in which class should the observation 10 be included?
Construct a frequency table from the following data:
| Marks | No. of students |
| less than 10 | 6 |
| less than 20 | 15 |
| less than 30 | 30 |
| less than 40 | 39 |
| less than 50 | 53 |
| less than 60 | 70 |
The height of 30 children in a class is given in centimetres. Draw up a frequency table of this data.
131, 135, 140, 138, 132, 133, 135, 133, 134, 135, 132, 133, 140, 139, 132, 131, 134, 133, 140, 140, 139, 136, 137, 136, 139, 137, 133, 134, 131, 140
The upper limit of the class interval (25 - 35) is _____________
If a class size is 10 and range is 80 then the number of classes are ___________
Size of the class 150 – 175 is ______.
Tally marks are used to find ______.
In the class intervals 10 – 20, 20 – 30, etc., respectively, 20 lies in the class ______.
Using the following frequency table.
| Marks (obtained out of 10) | 4 | 5 | 7 | 8 | 9 | 10 |
| Frequency | 5 | 10 | 8 | 6 | 12 | 9 |
10 marks the highest frequency.
Given below is a frequency distribution table. Read it and answer the questions that follow:
| Class Interval | Frequency |
| 10 – 20 | 5 |
| 20 – 30 | 10 |
| 30 – 40 | 4 |
| 40 – 50 | 15 |
| 50 – 60 | 12 |
- What is the lower limit of the second class interval?
- What is the upper limit of the last class interval?
- What is the frequency of the third class?
- Which interval has a frequency of 10?
- Which interval has the lowest frequency?
- What is the class size?
