200+ Probability-and-statistics Questions

Probability-and-statistics Questions Set 19:

Quiz Mode

Find the mean of first 5 prime numbers.

5.2

5.6

5.1

4.7

Solution:

What is the mean of the given data?
2, 3, 4, 5, 6, 7, 8, 9

5.7

6.1

5.5

5.8

Solution:

The variance of a set of data is 225. Then the standard deviation of the data is _____

Solution:

The mean of a distribution is 30 and the standard deviation is 6. What is the value of variance coefficient?

75%

50%

20%

100%

Solution:

The runs scored in a cricket match by 11 players is as follows:
7, 16, 120, 51, 101, 81, 2, 16, 10, 10, 16

Find the sum of mean, mode, median of this data.

Solution:

Kunal bought 65 books for Rs 1070 from one shop and 50 books for Rs 1115 from another. What is the average price he paid per book?

Rs 18

Rs 17

Rs 19

Rs 16

Solution:

If the average (arithmetic mean) of 5 positive integers is 11, what is the maximum possible difference between the largest and the smallest of these 5 numbers?

Solution:

Mean of ‘n’ observations is g . If two observations of ‘n + 1’ and ‘2n - 3’ is added, then the mean remains same, then what is the value of ‘3n’?

2g + 1

2g + 2

3 - 2g

2g + 3

Solution:

The mean of 10 observations is 16. On checking it was found that 2 observations were wrongly copied as 4 and 6 in place of 8 and 7. The correct mean is _______

15.5

16.5

Solution:

The average weight of the women in a group is 60 kg and that of the men is 72 kg. If the average weight of the group is 68 kg, what is the ratio of women to men in the group?

2 : 1

2 : 3

1 : 2

3 : 2

Solution:

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Probability-and-statistics Questions Set 19:

Find the mean of first 5 prime numbers.

Solution:

What is the mean of the given data?2, 3, 4, 5, 6, 7, 8, 9

Solution:

The variance of a set of data is 225. Then the standard deviation of the data is _____

Solution:

The mean of a distribution is 30 and the standard deviation is 6. What is the value of variance coefficient?

Solution:

The runs scored in a cricket match by 11 players is as follows:7, 16, 120, 51, 101, 81, 2, 16, 10, 10, 16Find the sum of mean, mode, median of this data.

Solution:

Kunal bought 65 books for Rs 1070 from one shop and 50 books for Rs 1115 from another. What is the average price he paid per book?

Solution:

If the average (arithmetic mean) of 5 positive integers is 11, what is the maximum possible difference between the largest and the smallest of these 5 numbers?

Solution:

Mean of ‘n’ observations is g . If two observations of ‘n + 1’ and ‘2n - 3’ is added, then the mean remains same, then what is the value of ‘3n’?

Solution:

The mean of 10 observations is 16. On checking it was found that 2 observations were wrongly copied as 4 and 6 in place of 8 and 7. The correct mean is _______

Solution:

The average weight of the women in a group is 60 kg and that of the men is 72 kg. If the average weight of the group is 68 kg, what is the ratio of women to men in the group?

Solution:

Related Question Sets:

Related Topics:

What is the mean of the given data?
2, 3, 4, 5, 6, 7, 8, 9

The runs scored in a cricket match by 11 players is as follows:
7, 16, 120, 51, 101, 81, 2, 16, 10, 10, 16

Find the sum of mean, mode, median of this data.