Which of the following is not a measure of dispersion______.
Variance
Mean Deviation
Standard Deviation
Mode
The mean of the squares of first n natural numbers is
n2/2
1/8 n ( n + 1 )
1/6 n ( 2n +1 )
1/6 ( n + 1 ) ( 2n + 1 )
The AM of the series 1, 2, 4, 8 ..... 2n is ______.
The temperature during a month in summer are recorded as ( in F ) 99, 78, 80, 94, 92, 76, 86, 96 . The mediantemperature is
76
99
92
89
The relationship between mean, median and mode for a moderately skewed distribution is
Mode = 3Median - 2 Mean
Mode = 2 Median - Mean
Mode = 3 Median - 2 Mean
Mode = 2 Median - 3 Mean
The central value of the set of observations is called
Mean
Median
G.M
One of the methods of determining mode is ______.
mode = 2 median - 3 mean
mode = 2 median + 3 mean
mode = 3 median - 2 mean
mode = 3 median + 2 mean
The temperature during a month in summer are record as ( in F ) 99, 78, 80, 94, 92, 76, 86, 96 The median temperature is _______.
The range of following set of observations : 2, 3, 5, 9, 8, 7, 6, 5, 7, 4, 3, is
11
7
5.5
6
In a moderately skewed distribution the value of mean and median are 5 and 6 respectively. Then the value of mode is _______.
8
16
21
