10 questions
The median of the data 4,6,8,9,11 is
6
8
9
11
The ratio of the sum of observations and the total number of observation is called
Mean
Median
Mode
Central tendency
The mean of x+2, x+3,x+4 and x-2 is
(x+7)/4
(2x+7)/4
(3x+7)/4
(4x+7)/4
The median of the data 155,160,145,149,150,147,152,144,148 is
149
150
147
144
The median of the data 17,2,7,27,15,5,14,8,10,24,48,10,8,7,18,28 is
10
24
12
8
The mean of the data 2,3,4,5,0,1,3,3,4,3 is
2
2.2
2.4
2.8
The class marks of a frquency distribution are given as follows:
15,20,25......
The class corresponding to class mark 15 is
12.5-17.5
17.5-22.5
18.5-21.5
19.5-20.5
The mean of 5 numbers is 30. If one number is excluded their mean becomes 28. The excluded number is
28
30
35
38
The median of the data 78, 56, 22, 34, 45, 54, 39, 68,54,84 is
45
49.5
54
56
In the class intervals 10-20, 20-30 the number 20 is included in
10-20
20-30
Both the intervals
None