Mathematics
Following data gives the number of children in 40 families :
1, 2, 6, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 1, 6, 2, 2
Represent it in the form of a frequency distribution.
Statistics
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Answer
Frequency distribution table :
| Number of Children | Tally-Marks | Frequency |
|---|---|---|
| 0 | IIII | 4 |
| 1 | 7 | |
| 2 | 12 | |
| 3 | 5 | |
| 4 | 7 | |
| 5 | II | 2 |
| 6 | III | 3 |
| Total | 40 |
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State which of the following variables are continuous and which are discrete :
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(ii) Daily maximum temperature of a city.
(iii) I.Q. of a students of a class.
(iv) Weights of players of a Volley-ball team.
(v) Number of car-accidents in a city.
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(vii) Time taken by runners in a race.
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(ix) Number of patients in a hospital per day.
Define the following terms:
(i) Variable
(ii) Class-interval
(iii) Class-size
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(vi) True class-limits
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(viii) Cumulative frequency of a class
The marks obtained by 40 students of a class in an examination are given below. Present the data in the form of a frequency distribution using equal class-size, one such class being 10 - 15(15 not included).
3, 20, 13, 1, 21, 13, 3, 23, 16, 13, 18, 12, 5, 12, 5, 24, 9, 2, 7, 18, 20, 3, 10, 12, 7, 18, 2, 5, 7, 10, 16, 8, 16, 17, 8, 23, 21, 6, 23, 15
Construct a frequency table for the following ages (in years) of 30 students using equal class-intervals, one of them being 9-12, where 12 is not included.
18, 12, 7, 6, 11, 15, 21, 9, 8, 13, 15, 17, 22, 19, 14, 21, 23, 8, 12, 17, 15, 6, 18, 23, 22, 16, 9, 21, 11, 16