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
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
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 arithmetic mean and mode of a data are 24 and 12 respectively, Then the median of the data is
(1) 20
(2) 18
(3) 21
(4) 22
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 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
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
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
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 : -. |