The mid value of class 1-10 is
5
5.5
6
10
In a frequency polygon ___________ are used.
mid points of classes and frequencies
end points of classes and frequencies
upper boundaries of classes less than cumulative frequencies
lower boundaries of classes less than cumulative frequencies
The greater than cumulative frequency of a class is 83 and that of next class is 72 then the frequency of the class is
11
12
60
80
The range of the first n natural numbers is
n
(n+1) / 2
(n-1) / 2
n-1
The mean of the first 10 natural numbers is
25
55
2.5
If the upper boundary of a class is 30, class interval is 10, then lower boundary is
20
30
40
If the mean of x,x+2, x+4, x+6, x+8 is 20 then x is
32
16
8
4
In a frequency distribution the midvalue of a class is 35 and lower boudnary is 30 then its upper boundary is
50
A histogram consists of
sectors
rectangles
triangles
squares
The median of 2, 7, 4,8, 9, 1, is
7
