Mathematics
Assertion (A): 30 children were asked about the number of hours they watched TV program everyday. The results are recorded as under.
| Number of hours | Frequency |
|---|---|
| 0 - 5 | 8 |
| 5 - 10 | 16 |
| 10 - 15 | 4 |
| 15 - 20 | 2 |
Then the number of children who watched TV for 10 or more hours a day is 22.
Reason (R): The assertion is not correct as the required number is 4 + 2 = 6.
A is true, but R is false.
A is false, but R is true.
Both A and R are true, and R is the correct reason for A.
Both A and R are true, and R is the incorrect reason for A.
Related Questions
In a frequency distribution, mid-values of the class is 10 and width of the class is 6, the lower limit of the class is :
6
7
8
9
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 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.