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Information Handling Class 8 Math Worksheet – 25 Marks
[Information Handling]
(1) Following are the number of days that 36 tourists stayed in some city. [1 × 3] = 3
1, 6, 16, 21, 41, 21, 5, 31, 20, 27, I7, I0, 3, 32, 2, 48, 8, 12, 21, 44, 1, 36, 5, 12, 3,13, 15, 10, 18, 3, 1, 11 , I4, 12, 64, 10.
(2) Listed below are the number of electricity units consumed by 50 households in a low income group locality of Lahore. [1 × 5] = 5
55, 45, 64, 130, 66, 155, 80, 102, 62, 60, 101, 58, 75, 81, 111, 90, 55, 151, 66, 139, 77, 99, 67, 51, 50, 125, 83, 55, 136, 91, 86, 54, 78, 100, 113, 93, 104, 111, 113, 96, 96, 87, 109, 94, 129, 99, 69, 83, 97, 97
With 12 classes of equal width of 10, construct a frequency table for the electricity units consumed.
(3) Compute the mean, median and mode of the following data: [1 × 4] = 4
(i) 1, 3, 5, 3, 5, 3, 7, 5, 7, 5, 7
(ii) 62, 90, 71, 83, 75
(iii) 45, 65, 80, 92, 80, 75, 56, 96, 62, 78
(iv) Number of Pens in 10 school libraries, (in hundreds)
78, 215, 35, 267, 39, 17, 418, 286, 335, 50.
(4) The following distances (in km) were travelled by 80 students to reach their school. [1 × 3] = 3
2, 8, 1, 5, 9, 5, 14, 10, 31, 20, 15, 4, 10, 6, 5, 10, 5, 18, 12, 25, 30, 27, 20, 3, 9, 15, 15, 18, 10, 1, 1, 6, 25,16, 7, 12, 1, 8, 21, 12.
(5) Test scores of a class of 20 students are as follows: [1 × 3] = 3
93, 84, 97, 98, 100, 78, 86, 100, 85, 92, 72, 55, 91, 90, 75, 94, 83,60, 81, 95
Draw a frequency distribution table and histogram for grouped data.
(6) Find the class mark and mean of the following frequency table: [1 × 5] = 5
Class lnterval | 0-39 | 40 – 79 | 80 – 119 | 120 – 159 | 120 – 159 |
Frequency | 19 | 51 | 85 | 98 | 6 |
(7) Number of rooms in 15 houses of a locality city [1 × 2] = 2
5, 9, 8, 6, 8, 7, 6, 7, 9, 8, 7, 9, 7, 8, 5