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1
The statistical data are of two types. These two types are ____________________________ .
Technical data and presentation data
Primary data and technical data
Primary data and secondary data
None of these
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 3-5 years are:
5
9
6
7
3
The median of the following data 46, 64, 87, 41, 58, 77, 35, 90, 55, 33, 92 is _____________
87
77
58
60.2
4
Empirical formula involves :
Mode, range and class mark
Median, mode and range
Mean, mode and median
Range, frequency and class mark
The collected data can be represented pictorially using __________________.
Pictograph
Bar graph
Histogram
All of these
If the arithmetic mean of 6, 8, 5, 7, x and 4 is 7, then x is
12
8
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?
A random survey of numbers of children of various age group playing in a park was found as follows. What is the maximum class size?
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. To calculate it we find the maximum and the minimum value in the data, and then the difference between the two is calculated.
Only 1 and 2
Only 2 and 3
Only 1 and 3
1, 2 and 3
10
3. It is the average number of observations.
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
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
The mode of the following data given :0, 3, 2, 1, 3, 5, 4, 3, 4, 3, 2, 1, 2, 0 is ______________.
15
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 ______________________.
20
27.5
17
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 _______________
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 2 and 4
Only 3 and 4
18
Which of the following statement is not true regarding range of data:
19
The mode of the data : 1, 7, 2, 4, 5, 9, 8, 3 is ____________.
Mode Does Not Exist
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