Mathematics
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 |
Related Questions
Construct the cumulative frequency table from the frequency table given below:
Class-Interval Frequency 0 – 6 7 6 – 12 11 12 – 18 8 18 – 24 14 24 – 30 12 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 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.
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