Statistics
Following table gives the number of trees planted by the students in a school on ' Environment Day, Observe the table and find mode of the trees planted by the students.
1) 80
2) 50
3) 45
4) 35
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 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 : -. |
Statistics
A school has 20 teachers, one of them retires at the age of 60 years and a new teacher replaces him, this change reduces the average age of the staff by 2 years, the age of new teacher is
(1) 28 years
(2) 25 years
(3) 20 years
(4) 18 years
| 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
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
Find the median of the following values :
37, 31, 42, 43, 46, 25, 39, 45, 32
1) 31
2) 46
3) 39
4) 43
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Statistics
If y=f(x) be a monotonically increasing or decreasing function of x and M is the median of variable x, then the median of y is
(1) f(M)
(2) M/2
(3) f−1(M)
(4) none of these
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Statistics
If the median of the data x1,x2,x3,x4,x5,x6,x7,x8 is α and x1<x2<x3<x4<x5<x6<x7<x8, then the median of x3,x4,x5,x6 is
(1) α
(2) α / 2
(3) α / 3
(4) α / 4
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 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 : -. |
