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1
Find the class mark with minimum frequency by using the given data:
100
90
120
110
2
The mean of 6, y, 7, x and 14 is 8. Then
x + y = 13
x - y = 13
2x + 3y = 13
3
Find the mode of 22, 25, 21, 22, 29, 25, 34, 37, 30, 22, 29, 25.
22
37
25
Both A and C
4
Find the frequency of Class 60-80 by using the given data:
17
77
7
70
5
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
6
The mean of first ten whole numbers is _____________
5.5
4.5
The arithmetic mean of first five natural numbers is _______________
8
Find the Frequency of class 80-100 by using the given data:
9
A group of 20 participants entered a quiz competition. Their scores are given in the table below. Calculate the percentage of the participants who scored more than 2 points.
5%
15%
25%
60%
10
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
26
12
11
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
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 5 year are:
15
16
14
13
Identify the correct statement.
1. Statistics is the branch of mathematics that deals with analysis of the data that has been collected.
2 This analysis can used in various predictions and plannings.
2. Statistics deal with the collections, classification, graphical representation, analysis and interpretation of data.
Only 1
Only 2
Only 3
1, 2 and 3 are correct
The mode of the following data given :0, 3, 2, 1, 3, 5, 4, 3, 4, 3, 2, 1, 2, 0 is ______________.
The number of students playing football from school C is x percents of the total number of students playing football from all the schools x equals _______________
The total of frequency up to an upper class limit or boundary is known as _____________________.
Average frequency
Cumulative frequency
Frequency distribution
Frequency polygon
In the exclusive form of class boundary the value 20 will lie in the _________________ class interval.
10 - 20
20 - 30
30 - 40
18
The mean of 8, 11, 6, 14, x and 13 is 16. Find the value of the observation x.
34
45
44
43
19
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
20
The arithmetic mean for the following frequency distribution is_________________.
CLASS INTERVAL
FREQUENCY1
14.5
28.3