Karl-Pearson’s coefficient of skewness of a distribution is 0.32. Its S.D. is 6.5 and mean 39.6. Then the median of the distribution is given by ____.
28.61
38.81
29.13
28.31
Which one of the following measures of marks is the most suitable one of central location for computing intelligence of students?
Mode
Arithmetic mean
Geometric mean
Median
The central value of the set of observations is called ____.
Mean
Median
Mode
G.M.
Which of the following, in case of a discrete data, is not equal to the median?
50th percentile
5th decile
2nd quartile
Lower quartile
For a symmetrical distribution and , the median is ____.
20
25
35
None of the above
A set of numbers consists of three 4’s, five 5’s, six 6’s, eight 8’s and seven 10’s. The mode of this set of numbers is ____.
6
7
8
10
Consider the following statements
1) Mode can be computed from histogram
2) Median is not independent of change of scale
3) Variance is independent of change of origin and scale
Which of these is/are correct?
(1), (2) and (3)
Only (2)
Only (1) and (2)
Only (1)
The mean deviation of the numbers 3, 4, 5, 6, 7 is ____.
0
1.2
5
25
For a normal distribution if the mean is M, mode is and median is , then ____.
If 25% of the item are less than 20 and 25% are more than 40, the quartile deviation is ____.
20
30
40
10