MCQ STATISTICS Part 1

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(A) lower limits of the classes

(B) upper limits of the classes

(D) frequencies of the class marks

2. While computing mean of grouped data, we assume that the frequencies are

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(A) evenly distributed over all the classes

(B) centred at the classmarks of the classes

(D) centred at the lower limits of the classes

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(A) 0

(B) -1

(D) 2

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(A)

(B)

(C)

(D)

5. The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its
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(A) mean

(B) median

(D) all the three above

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(A) 15

(B)25

(D) 35

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(A) 17

(B) 17.5

(D) 18.5

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(A) 10-20

(B) 20-30

(D) 50-60

9. Consider the data :

The difference of the upper limit of the median class and the lower limit of the modal class is

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(A) 0

(B) 19

(D) 38

10. The times, in seconds, taken by 150 atheletes to run a 110 m hurdle race are tabulated

The number of atheletes who completed the race in less then 14.6 seconds is :

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(A) 11

(B) 71

(D) 130

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