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1. Question marks are mentioned with each Question.
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1
20 years ago, when my parents got married, their average age was 23 years, now the average of my family, consisting of myself and my parents only is 35 years. My present age is
17 years
14 years
12 years
16 years
2
Find the Range of : 71, 72, 70, 75, 73, 74, 75, 70, 74, 72
4
3
5
The mean of 10 observation is 25. If one observation, namely 25, is deleted, the new mean is ______________
25
20
28
22
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.
12
The median of the following data 46, 64, 87, 41, 58, 77, 35, 90, 55, 33, 92 is _____________
87
77
58
60.2
6
Find the mode of 22, 25, 21, 22, 29, 25, 34, 37, 30, 22, 29, 25.
37
Both A and C
7
Find the Frequency of class 80-100 by using the given data:
9
8
The mean of 6, y, 7, x and 14 is 8. Then
x + y = 13
x - y = 13
2x + 3y = 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
10
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 ______________________.
18
17
None of these
11
The mean of the given data 16, 18, 19, 21, 23, 23, 27, 29, 29, 35 is _________________.
24
26
30
If the mean of the following distribution is 20. The value of x is _____________.
13
What is the overall average of marks in the four subjects in the year 2009 ?
60
63
64
65
14
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
15
The arithmetic mean for the following frequency distribution is_________________.
CLASS INTERVAL
FREQUENCY1
14.5
28.3
16
In the exclusive form of class boundary the value 20 will lie in the _________________ class interval.
10 - 20
20 - 30
30 - 40
In the exclusive form of class boundary the value 19.6 will lie in the _________________ class interval.
A class interval of a data has 15 as the lower limit and 25 as the class size, then the class mark of the class is ______________________.
27.5
19
The inclusive form of class boundary the value 19.6 will lie in ___________________class interval.
In the exclusive form of class boundary the value 19.4 will lie in the _________________ class interval.