Mathematics
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.
Statistics
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Answer
The frequency table for the given distribution is :
| Ages | Cumulative frequency | No. of students |
|---|---|---|
| 0 - 4 | 0 | 0 |
| 4 - 7 | 85 | 85 - 0 = 85 |
| 7 - 10 | 140 | 140 - 85 = 55 |
| 10 - 13 | 243 | 243 - 140 = 103 |
| 13 - 16 | 300 | 300 - 243 = 57 |
(i) There are 103 students in the age group 10-13.
(ii) The age group 7-10 has the least number of students.
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Related Questions
Assertion (A): 30 children were asked about the number of hours they watched TV program everyday. The results are recorded as under.
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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.
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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 Fill in the blanks in the following table:
Class Interval Frequency Cumulative Frequency 25 - 34 …………… 15 35 - 44 …………… 28 45 - 54 21 …………… 55 - 64 16 …………… 65 - 74 73 75 - 84 12 …………… The value of π upto 50 decimal places is :
3.14159265358979323846264338327950288419716939937510
(i) Make a frequency distribution table of the digits from 0 to 9 after the decimal place.
(ii) Which are the most and the least occurring digits ?