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Question (31)

QN0037101

A distribution has frequencies 5, 7, 8 and 10. The cumulative frequency up to the third class is:

(A) 12
(B) 18
(C) 20
(D) 30

Correct Answer: C

Explanation:

5 + 7 + 8 = 20.

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Question (32)

QN0037102

If the total frequency is 50 and the cumulative frequency before a class is 18, the value of N/2 − cf is:

(A) 5
(B) 7
(C) 8
(D) 10

Correct Answer: B

Explanation:

N/2 − cf = 25 − 18 = 7.

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Question (33)

QN0037103

In the median formula, l represents:

(A) Upper limit of median class
(B) Lower boundary of median class
(C) Frequency of median class
(D) Class mark

Correct Answer: B

Explanation:

l represents the lower boundary of the median class.

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Question (34)

QN0037104

In the median formula, h represents:

(A) Class size
(B) Median value
(C) Cumulative frequency
(D) Total frequency

Correct Answer: A

Explanation:

h represents the class size.

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Question (35)

QN0037105

If N = 40, l = 20, cf = 12, f = 8 and h = 10, the median is:

(A) .
(B) 32
(C) 34
(D) 35

Correct Answer: B

Explanation:

Median = 20 +

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Question (36)

QN0037106

For a grouped distribution, N = 60, l = 30, cf = 20, f = 10 and h = 10. The median is:

(A) 65
(B) 66
(C) 70
(D) 75

Correct Answer: C

Explanation:

Median = 30 +

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Question (37)

QN0037107

If N = 50, l = 10, cf = 15, f = 10 and h = 10, the median is:

(A) 25
(B) 30
(C) 35
(D) 40

Correct Answer: A

Explanation:

Median = 10 +

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Question (38)

QN0037108

A distribution has N = 80. The cumulative frequencies are 10, 25, 48, 70 and 80. The median class is the class corresponding to:

(A) CF = 10
(B) CF = 25
(C) CF = 48
(D) CF = 70

Correct Answer: C

Explanation:

N/2 = 40. The first cumulative frequency greater than 40 is 48.

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Question (39)

QN0037109

If N = 100 and the cumulative frequencies are 15, 30, 55, 80 and 100, the median class is the class corresponding to:

(A) 15
(B) 30
(C) 55
(D) 80

Correct Answer: C

Explanation:

N/2 = 50. The first cumulative frequency greater than 50 is 55.

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Question (40)

QN0037110

The median class has lower boundary 20, class size 10, cumulative frequency before it 25, class frequency 15 and total frequency 80. The median is:

(A) 28
(B) .
(C) 31
(D) 32

Correct Answer: C

Explanation:

Median = 20 +

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Question (31)

A distribution has frequencies 5, 7, 8 and 10. The cumulative frequency up to the third class is:

Explanation:

Link:

Question (32)

If the total frequency is 50 and the cumulative frequency before a class is 18, the value of N/2 − cf is:

Explanation:

Link:

Question (33)

In the median formula, l represents:

Explanation:

Link:

Question (34)

In the median formula, h represents:

Explanation:

Link:

Question (35)

If N = 40, l = 20, cf = 12, f = 8 and h = 10, the median is:

Explanation:

Link:

Question (36)

For a grouped distribution, N = 60, l = 30, cf = 20, f = 10 and h = 10. The median is:

Explanation:

Link:

Question (37)

If N = 50, l = 10, cf = 15, f = 10 and h = 10, the median is:

Explanation:

Link:

Question (38)

A distribution has N = 80. The cumulative frequencies are 10, 25, 48, 70 and 80. The median class is the class corresponding to:

Explanation:

Link:

Question (39)

If N = 100 and the cumulative frequencies are 15, 30, 55, 80 and 100, the median class is the class corresponding to:

Explanation:

Link:

Question (40)

The median class has lower boundary 20, class size 10, cumulative frequency before it 25, class frequency 15 and total frequency 80. The median is:

Explanation:

Link:

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