Consider data
, then
Σ fi =
50
51
52
53
The arithmetic mean of first n natural numbers is
n/2
n/2 + 1
(n+1)/2
(n-1)/2
The mean and median of a uni - nodal grouped data are 72.5 and 73.9 respectively. Then mode is
73
73.5
75.4
76.7
If mode = 80 and mean = 110 then the median is
110
120
100
90
The measure of central tendency which can't be found graphically is
Mean
Median
Mode
None of these
The mean of 9, 11, 13, P, 18, 19 is P. Then the value of P is
10
12
14
15
A data has 25 observations (arranged in descending order). Which observation represents the median?
12th
13th
14th
15th
For the following distribution
the modal class is
20 - 30
30 - 40
40 - 50
50 - 60
What measure of central tendency is obtained graphically as the x - coordinate of the point of intersection of the two ogive for grouped data?
The mode when median is 125.6 and mean is 128 is
120.8
119.7
120.5
119.8
