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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
The number of times a particular observation occurs in a given data is called ________________
Its Range
Its Frequency
Its Mean
None of These
3
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 15 hours?
4
The mean of first ten whole numbers is _____________
5.5
6
4.5
5
A random survey of numbers of children of various age group playing in a park was found as follows:
Then the number of children playing between the age group of 10-15 years are ________________.
50
60
20
10
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:
7
The daily earning (in rupees) of 10 workers in a factory are 8, 16, 19, 8, 16, 19, 16, 8, 19, 16. The median wage is ____________
Rs. 17.50
Rs. 8.00
Rs. 19.00
Rs. 16.00
8
The branch of mathematics that deals with analysis of the data that has been collected is _________________.
Trigonometry
Statistics
Geometry
None of these
9
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
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%
25%
60%
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
12
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
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 17 hours?
14
If the mean of the following distribution is 20. The value of x is _____________.
30
15
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?
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
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 between 10-15 hours?
18
The table shows the distribution of marks in an English test. Grade B is given to marks ranging from 40 to 54. Calculate the percentage of pupils who obtained a grade B.
26%
52%
65%
75%
19
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
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