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1
If each entry of a data is increased by 5, then the arithmetic mean ____________________
Remains the same
Increases by 5
Decreases by 5
None of the foregoing
2
In a week the prices of a bag of rice were 350, 250, 330, 290, 320, 310, 300. The range is __________
90
100
60
70
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
The mean of 994, 996, 998, 1000 and 1002 is ________________
992
1004
998
None
5
The collected data can be represented pictorially using __________________.
Pictograph
Bar graph
Histogram
All of these
6
In a city, the weekly observations on the cost of living index made in a study are given in the following table :
What is the class mark of first interval?
153
164
168
163
7
The number of times a particular item occurs in a class interval is called its ________________
Class Mark
Class Size
Frequency
None of these
8
The mean of 6, y, 7, x and 14 is 8. Then
x + y = 13
x - y = 13
2x + 3y = 13
9
While computing the mean of grouped data, we assume that the frequencies are ________________________.
Evenly distributed over all the classes
Centered at the class marks of the classes
Centered at the upper limits of the classes
Centered at the lower limit of the classes
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 mean of the given data 16, 18, 19, 21, 23, 23, 27, 29, 29, 35 is _________________.
24
26
30
12
The frequency table shows the number of passengers in each of the 40 taxis that were inspected during a police road - block. Find the value of x.
13
The mode of the following data given :0, 3, 2, 1, 3, 5, 4, 3, 4, 3, 2, 1, 2, 0 is ______________.
14
Which of the following statement is not true regarding range of data:
Only 1
Only 2
Only 3
15
The inclusive form of class boundary the value 19.4 will lie in ___________________class interval.
10 - 20
20 - 30
30 - 40
16
30 children were asked about the number of hours, they watched TV programs in previous week. The results are as follows: 1, 6, 2, 3, 5, 12, 5, 8, 4, 8 10, 3, 4, 12, 2, 8, 15, 1, 17, 6, 3, 2, 8, 5, 9, 6, 8, 7, 14, 12. How many children watch TV more than 5 hours?
17
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 10 years are:
53
35
23
32
18
Calculate the range of the given sets of data
7,47,8,42,47,95,42,96,2
84
71
94
19
The inclusive form of class boundary the value 19.6 will lie in ___________________class interval.
20
In the exclusive form of class boundary the value 19.6 will lie in the _________________ class interval.