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1. Question marks are mentioned with each Question.
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5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
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1
The frequency table shows the marks obtained by a group of students in a monthly test. Calculate the percentage of students who failed the test if 40 is the passing mark.
3%
12%
15%
30%
2
A random survey of numbers of children of various age group playing in a park was found as follows. Children playing between the age group of 15-17 years are:
5
4
3
Find the Range of the Given data: 50, 53, 50, 51, 48, 93, 90, 92, 91, 90
48
45
44
43
The difference between the maximum and minimum observation in the data is _________________
Class Interval
Class Mark
Range
Frequency
Given below are the marks secured by 20 students in a test. 20, 26, 49, 44, 12, 17, 22, 10, 5, 47, 33, 32, 23, 34, 45, 16, 4, 8, 21, 28. How many students are there who secured less than 20 marks ?
7
12
8
15
6
A random survey of numbers of children of various age group playing in a park was found as follows. Children playing between the age group of 1-2 years are:
9
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
The difference between the highest and the lowest value of the observations in a data is known as _____________________.
Mode
Median
What is the overall average of marks in the four subjects in the year 2009 ?
60
63
64
65
10
Which of following statements are true for secondary data
1. When an investigator collects data by using a proper form and with a definite plan.
2. Data are reliable and relevant because they are original in character.
3. Data are collected by some individuals or by some institutions or by research bodies.
Only 1 and 2
Only 2 and 3
Only 1 and 3
None of these
11
Supposing that there were 40 students in science in the year 2009 . How much total of marks did they receive combined together ?
2800
2720
2560
3000
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
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
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 17 years are:
55
49
Identify the incorrect statement.
16
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 _______________
17
The arithmetic mean for the following frequency distribution is_________________.
CLASS INTERVAL
FREQUENCY1
14.5
28.3
18
Which of the following statement is not 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. To calculate it we find the maximum and the minimum value in the data, and then the difference between the two is calculated.
19
The inclusive form of class boundary the value 19.4 will lie in ___________________class interval.
10 - 20
20 - 30
30 - 40
20
A tabular arrangement for classifying data into different groups is called____________________ .
Standard deviation
Class
Arithmetic mean
Frequency distribution