If t is the standard deviation of x, y, z then the standard deviation of x + 5, y + 5, z + 5 is
3/4
t + 5
t
x y z
Which of the following is not a measure of central tendency?
Median
S.D
Mean
Mode
The median of 13,23,12,18,26,19,14 is
18
23
26
27
The variance of 10,10,10,10 is
10
√10
5
0
Coefficient of range is calculated using the formula
L - S
L + S
SD of a collection of data is 2√2. If each value is multiplied by 3, then the SD of the new data is
√12
4√2
6√2
9√2
The range of the first 10 prime numbers 2,3,5,7, 11, 13,17,19,23,29 is
28
29
For a collection of 11 items, Σx = 132, then the AM is
11
12
14
13
The mean of 9,11,13,p,18,19 is P. Then the value of p is
15
If the variance of 14,18, 22, 26,30 is 32, then the variance of 28,36,44,52,60 is
64
128
32√2
32
