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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
Find the class-mark of the class 35-40.
The value of π upto 50 decimal places is given below:
3.14159265358979323846264338327950288419716939937510
From this information prepare an ungrouped frequency distribution table of digits appearing after the decimal point.
What is the class-mark of class 25-35?
The value of π up to 50 decimal place is
3.14159265358979323846264338327950288419716939937510
(i) Make a frequency distribution table of digits from 0 to 9 after the decimal place.
(ii) Which are the most and least occurring digits?
Construct the frequency distribution table from the following cumulative frequency table:
| Ages | No. of students |
| Below 4 | 0 |
| Below 7 | 85 |
| Below 10 | 140 |
| Below 13 | 243 |
| Below 16 | 300 |
(i) State the number of students in the age group 10 - 13.
(ii) State the age-group which has the least number of students.
The range of the data 200, 15, 20, 103, 3, 196, is _____________
If a class size is 10 and range is 80 then the number of classes are ___________
Form a continuous frequency distribution table for the marks obtained by 30 students in a X std public examination.
328, 470, 405, 375, 298, 326, 276, 362, 410, 255, 391, 370, 455, 229, 300, 183, 283, 366, 400, 495, 215, 157, 374, 306, 280, 409, 321, 269, 398, 200
Using the following frequency table.
| Marks (obtained out of 10) | 4 | 5 | 7 | 8 | 9 | 10 |
| Frequency | 5 | 10 | 8 | 6 | 12 | 9 |
9 students got full marks.
The class size of the class interval 60 – 68 is 8.
