Statistics
The median of first 12 prime numbers is :
(1) 13
(2) 14
(3) 15
(4) 17
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Statistics
When 10 is subtracted from all the observations, the mean is reduced to 60% of its value. If 5 is added to all the observations, then the mean will be
(1) 25
(2) 30
(3) 60
(4) 65
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Statistics
The highest score of a certain data exceeds in lowest score by 16 and coefficient of range is 1/3. The sum of the highest score and the lowest score is
(1) 36
(2) 48
(3) 24
(4) 18
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Statistics
The coefficient of range of a set of data is given to be 18. Then the ratio of the maximum value in the data to the minimum value is:
(1) 8 / 1
(2) 9 / 8
(3) 9 / 7
(4) 8 / 7
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Statistics
A family spends Rs. 6,000 p.m. to meet the monthly expenditure. The expenditure has been shown in the given pie diagram. The miscellaneous expenditure is
(1) Rs. 1,500
(2) Rs. 2,000
(3) Rs. 1,200
(4) Rs. 3,000
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Statistics
If the mean of the lower and upper quartile is 10 and semi-interquartile range is 5, then the lower quartile and upper quartile respectively are
(1) 2 and 12
(2) 3 and 13
(3) 4 and 14
(4) 5 and 15
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Statistics
The highest score of a certain data exceeds in lowest score by 16 and coefficient of range is 1/3. The sum of the highest score and the lowest score is
(1) 36
(2) 48
(3) 24
(4) 18
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Statistics
The frequency distribution of marks obtained by 28 students in a test carrying 40 marks is given below
| Marks | 0-10 | 10-20 | 20-30 | 30-40 |
| Number of students | 6 | x | y | 6 |
If the mean of the above data is 20, then the difference between x and y is
(1) 3
(2) 2
(3) 1
(4) 0
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Statistics
The mean yearly salary of an employee of acompany was Rs. 20,000. If the mean yearly salaries of male and female employees were Rs. 20800 and Rs. 16800 respectively, then the percentages of males and females employed in the company respectively are
(1) 80% and 20%
(2) 70% and 30%
(3) 55% and 45%
(4) 50% and 50%
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Statistics
The mean age of a combined group of men and women is 25 years. If the mean age of the group of men is 26 and that of the group of women is 21, then the percentage of men and women in the group is
(1) 60, 40
(2) 80, 20
(3) 20, 80
(4) 40, 60
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
