The difference between the largest and the smallest data value is the
Variance
Mean
Range
Mode
Which of the following is not a measure of central tendency?
Median
Standard deviation
The mean and median of a data are 14 and 15 respectively. The value of mode is
16
17
13
18
Given the following set of data , what is the range?
[12 , 23 , 35 , 54 , 21 , 8 , 9 , 67 ]
55
59
8
56
Consider data
50
51
52
53
The middle most observation of a statistical data when they are arranged in ascending order is called
None of these
The arithmetic mean =
Sum of observations × Number of observations
Product of observations ÷ Number of observations
Sum of observations ÷ Number of observations
Sum of observation - Number of observations
The mode of the 45 , 49 , 42 , 56 , 41 , 36 , 34 , 38 , 41 , 40 , 42 , 41 , 39 , 40 , 39 , 36 , 41 is
41
40
49
What is the median?
1 , 5 , 3 , 7 , 10 , 5 , 4.
5
6
7
10
The arithmetic mean of first n natural number is
n/2
n/2 + 1
(n + 1)/2
(n -1)/2
