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Class 9 Maths
Statistics Chapter 14
Quiz 1
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A frequency distribution is defined as
0%
distribution with tally marks
0%
a rough arrangement of data
0%
tabular arrangement of data by classes together with the corresponding class frequencies
0%
arrangement of frequencies with class size
The class mark of class interval 60 - 70 will be
0%
75
0%
65
0%
70
0%
60
The consecutive class marks of a data having continuous class intervals having class width as 5, have a gap of ________ between them.
0%
2.5
0%
4.5
0%
5
0%
10
Number of runs scored by a cricket player in 25 innings are as follows: 26, 35, 94, 48, 82, 105, 53, 0, 39, 42, 71, 0, 64, 15, 34, 67, 0, 42, 124, 84, 54, 48, 139, 64,The number of centuries scored by him is
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1
0%
3
0%
5
0%
0
If the class marks in a frequency distribution are 19.5, 26.5, 33.5, 40.5 then the class corresponding to the class mark 33.5 is:
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37 - 41
0%
30 - 37
0%
23 - 30
0%
16 - 23
A curious 12th class student wants to know and collect the data regarding the percentage of students who got grade A1 in Mathematics during the last 10 years in Board examinations. This collected data is known as
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raw data
0%
a primary data
0%
frequency data
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a secondary data
Class size for the following distribution: 0 – 0.25, 0.25 – 0.50, 0.50 – 0.75 is
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10
0%
0. 25
0%
50
0%
2.5
Three coins were tossed thirty times. Each time the number of heads occurring was noted as follows: 0, 1, 2, 2, 1, 2, 3, 1, 3, 0 1, 3, 1, 1, 2, 2, 0, 1, 2, 1 3, 0, 0, 1, 1, 2, 3, 2, 2, 0 The frequency distribution table for the given data will be
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A
0%
B
0%
C
0%
D
Class mark of a class interval U-L is
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A
0%
B
0%
C
0%
D
In the following data, the number of class intervals, (by inclusive method), and taking 4 as the magnitude of class intervals will be31, 23, 19, 29, 22, 20, 16, 10, 13, 34 38, 33, 28, 21, 15, 18, 36, 24, 18, 15 12, 30, 27, 23, 20, 17, 14, 32, 26, 25 18, 29, 24, 19, 16, 11, 22, 15, 17, 10
0%
10
0%
7
0%
8
0%
9
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