96
Q:

# A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

 A) 3/7 B) 4/7 C) 1/8 D) 3/4

Answer:   B) 4/7

Explanation:

Let number of balls = (6 + 8) = 14.

Number of white balls = 8.

P (drawing a white ball) = 8 /14 = 4/7.

Subject: Probability
Q:

Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18

 A) 12 and 18 B) 13 and 18 C) 12 and 17 D) 11 and 17

Answer & Explanation Answer: B) 13 and 18

Explanation:
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Exam Prep: Bank Exams

19 1332
Q:

Find the standard deviation of {11, 7, 10,13, 9}

 A) 1 B) 2 C) 4 D) 5

Answer & Explanation Answer: B) 2

Explanation:
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Exam Prep: Bank Exams

4 954
Q:

A table tennis player, lost 12 games out of 18 games played. Calculate the games won in terms of decimal.

 A) 0.667 B) 0.067 C) 0.50 D) 0.333

Answer & Explanation Answer: D) 0.333

Explanation:
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Exam Prep: Bank Exams

3 888
Q:

A sequence , has odd number of terms. Then the median is

 A) axn2+1 B) axn2-1 C) axn-1 D) axn2

Answer & Explanation Answer: D) axn2

Explanation:
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Exam Prep: Bank Exams

3 7139
Q:

The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?

 A) 16.66% B) 66.66% C) 33.33% D) 100%

Answer & Explanation Answer: C) 33.33%

Explanation:
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5 962
Q:

If the standard deviation of a population is 3, what would be the population variance?

 A) 9 B) 6 C) 8 D) 15

Answer & Explanation Answer: A) 9

Explanation:
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4 7201
Q:

The variance of a set of data is 169. Then the standard deviation of the data is

 A) +-13 B) 13 C) 69 D) 84.5

Answer & Explanation Answer: B) 13

Explanation:
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Exam Prep: Bank Exams

3 5966
Q:

If the standard deviation of a population is 10, what would be the population variance?

 A) 100 B) 30 C) 5 D) 20

Answer & Explanation Answer: A) 100

Explanation:
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Exam Prep: Bank Exams

6 955