Mathematics
Convert the following frequency distribution to exclusive form :
| Class Interval | Frequency |
|---|---|
| 30 – 34 | 7 |
| 35 – 39 | 9 |
| 40 – 44 | 13 |
| 45 – 49 | 6 |
| 50 – 54 | 3 |
| 55 – 59 | 10 |
Use this table to find :
(i) The true class-limits of the fourth class-interval.
(ii) The class-boundaries of the fifth class-interval.
(iii) The class-mark of the third class-interval.
(iv) The class-size of the sixth class-interval.
Related Questions
Construct a frequency distribution table from the following cumulative frequency distribution:
Class-Interval Cumulative Frequency 0 – 8 8 8 – 16 21 16 – 24 26 24 – 32 33 32 – 40 42 Construct a frequency table from the following data :
Age (in years) Number of Students Less than 10 6 Less than 20 14 Less than 30 30 Less than 40 52 Less than 50 65 Less than 60 70 If in a grouped frequency distribution, the classes are 20 - 30, 30 - 40, 40 - 50, …, then the observation 40 is included in the class :
30 - 40
40 - 50
50 - 60
20 - 30
If in a grouped frequency distribution, the class intervals are 20 - 29, 30 - 39, 40 - 49, …., then the observation 29.4 is included in the class :
20 - 29
30 - 39
40 - 49
29 - 30