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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
If in a data, 10 numbers arranged in increasing order. If the 7th entry is increased by 4, then the median increased by ________________
Zero
4
6
5
2
The average weight of sample of 10 apples is 52 g. Later it was found that the weighing machine had shown the correct average apple 10g less. The correct average weight of an apple is
62 g
54 g
56 g
52 g
3
The mean of first 5 prime numbers is _________________.
5.8
6.8
5.6
6.5
When an investigator collects data by using a proper form and with a definite plan is called_______________.
Primary data
Organised data
Un - organised data
Secondary data
Median divides the total frequency into _________________ equal parts.
Four
Three
Two
Five
The mean of x, x + 3, x + 6, x + 9 and x + 12 is _______________
x + 6
x + 3
x + 9
x + 12
7
Empirical formula involves :
Mode, range and class mark
Median, mode and range
Mean, mode and median
Range, frequency and class mark
8
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
From the frequency table, the percentage of families with less than 3 children is Find the value of x:
15
11
18
10
In which year the difference between the highest and the average marks in Maths was maximum ?
2009
2010
2008
2007
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
22
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:
17
16
14
13
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 ?
The exclusive 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
The inclusive form of class boundary the value 19.6 will lie in ___________________class interval.
10 - 20
20 - 30
30 - 40
Calculate the range of the given sets of data
7,47,8,42,47,95,42,96,2
84
71
94
Identify the incorrect 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
In the exclusive form of class boundary the value 20 will lie in the _________________ class interval.
19
Which one of the following is not correct:
1. Statistics is liable to be misused.
2. The data collected by the investigator is known as raw data.
3. Statistical results are accurate.
4. Statistical data takes individual data into account.
Only 1 and 2
Only 2 and 4
Only 3 and 4
20
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?