22: Data Handling Class 8 Maths : Icse-viii-mathematics

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ICSE-VIII-Mathematics

22: Data Handling Class 8 Maths

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Section : A

Qstn #1
Arrange the following data as an array (in ascending order):

#1-i
7, 5, 15, 12, 10, 11, 16
Ans : Ascending order = 5, 7, 10, 11, 12, 15, 16

#1-ii
6.3, 5.9, 9.8, 12.3, 5.6, 4.7
Ans : Ascending order = 4.7, 5.6, 5.9, 6.3, 9.8, 12.3

Qstn #2
Arrange the following data as an array (descending order):

#2-i
0 2, 0, 3, 4, 1, 2, 3, 5
Ans : Descending order = 5, 4, 3, 3, 2, 2, 1, 0

#2-ii
9.1, 3.7, 5.6, 8.3, 11.5, 10.6
Ans : Descending order = 11.5, 10.6, 9.1, 8.3, 5.6, 3.7

Qstn #3
Construct a frequency table for the following data:

#3-i
6, 7, 5, 6, 8, 9, 5, 5, 6, 7, 8, 9, 8, 10, 10, 9, 8, 10, 5, 7, 6, 8. (ii) 3, 2, 1, 5, 4, 3, 2, 5, 5, 4, 2, 2, 2, 1, 4, 1, 5, 4.
Ans : (ii)

#3-ii
3, 2, 1, 5, 4, 3, 2, 5, 5, 4, 2, 2, 2, 1, 4, 1, 5, 4.
Ans :

Qstn #4
Following are the marks obtained by 30 students in examinations.
15, 20, 8, 9, 10,
16, 17, 20, 24, 30,
44, 47, 38, 36, 40,
27, 25, 28, 30, 19,
7, 11, 21, 31, 41,
37, 47, 23, 20, 17
Taking class intervals 0-10, 10-20, ......... 40-50 ; construct a frequency table.
Ans :

Qstn #5
Construct a frequency distribution table for the following data; taking class-intervals 4-6, 6-8, ...... 14-16.
11.5, 6.3, 7.8, 9.2, 10.5, 4.5, 6, 8.3, 12.5, 15.8,
7.4, 5.3, 8.4, 15.2, 8.9, 9.8, 8.25, 6.5, 5.8, 10.5,
4.6, 6.4, 8.9, 10.8, 12.7, 14.2, 15.3, 11.7, 9.9, 8.8,
` 6.6, 4.3, 4.7, 9.4, 10.1, 15.5, 14.4, 12.2, 7.7, 5.5
Ans :

Qstn #6
Fill in the blanks:

#6-i
Lower class limit of 15-18 is .........
Ans : Lower class limit of 15 - 18 is 15.