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1
Median is that measure of central tendency which divides the total frequency into _________________ equal parts.
Four
Three
Two
Five
2
Find the mean of grouped data can be calculated using __________________ .
Mean Using Class Mark.
Assumed Mean Method
Step Deviation Method
All of these
3
What is the relation among mean, median and mode?
Mode = 3 median - 2 mean
Mode = 2 median - 3 mean
Mode = 3 mean - 2 median
Mode = 2 mean - 3 median
4
Find the frequency of Class 60-80 by using the given data:
17
77
7
70
5
The most frequently occurring observation is called ________________.
Mean
Median
Mode
Range
6
If in a data, 10 numbers arranged in increasing order. If the 7th entry is increased by 4, then the median increased by ________________
Zero
Find the mode of 74, 81, 62, 58, 77, 74.
81
74
62
58
8
The mode of a set of observations is the value which :
Occurs most frequently
Is central
Is between maximum and minimum
None of the foregoing
9
The inclusive form of class boundary is defined as ________________________________________.
The class interval is defined as lower limit inclusive and the upper limit exclusive.
The true limit of a class is obtained by subtracting 0.5 from the lower limit of the class and the true upper limit of the class is obtained by adding 0.5 to the upper limit.
It is equal to half of the sum of the lower and upper limits of a class
None of these
10
Which of the following statement is true regarding range of data:
1. It tells us how widely the numbers are spread.
2. It is the difference of the highest and the lowest observation.
3. It is the average number of observations.
Only 1 and 2
Only 2 and 3
Only 1 and 3
1, 2 and 3
11
The exclusive form of class boundary is defined as ________________________________________.
12
In which year the difference between the highest and the average marks in Maths was maximum ?
2009
2010
2008
2007
13
A random survey of numbers of children of various age group playing in a park was found as follows. Children playing under the age of 7 years are:
24
22
26
14
The class mark of the class is 25 and if the upper limit of that class is 32, the lower limit for that class is ______________________.
20
18
15
A survey was carried out for the purpose of determining the number of children in each family. The results are shown in the table below. Calculate the percentage of families which have more than 2 children.
35%
40%
60%
75%
16
The mean of the data: 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.5 is ______________.
9.6
8.8
8.5
9.4
Calculate the range of the given sets of data
7,47,8,42,47,95,42,96,2
84
71
94
In the exclusive form of class boundary the value 19.4 will lie in the _________________ class interval.
10 - 20
20 - 30
30 - 40
19
The inclusive form of class boundary the value 20 will lie in ___________________class interval.
The table shows the distribution of marks in an English test. Grade B is given to marks ranging from 40 to 54. Calculate the percentage of pupils who obtained a grade B.
26%
52%
65%