CBSE Board Practice

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CBSE Grade VII - Data Handling

Question 1

1.

Identify the frequency distribution table for the given heights of 14 students in cm 169 177 162 166 172 166 168 161 152 159 160 167 162 157

Height (in cm) 151 152 161 162 163 164 165 166 170 172 178 No. of Students 1 2 1 1 1 2 1 1 1 1 2 Height (in cm) 150 152 155 158 160 168 170 172 175 177 179 No. of Students 2 2 1 1 1 2 1 1 1 1 1 Height (in cm) 152 157 159 160 161 162 166 167 168 169 172 177 No. of Students 1 1 1 1 1 2 1 1 1 2 1 1 Height (in cm) 152 157 159 160 161 162 166 167 168 169 172 177 No. of Students 1 1 1 1 1 2 2 1 1 1 1 1 Height (in cm) 152 157 159 160 161 162 166 167 168 169 177 No. of Students 1 1 1 1 1 2 2 1 1 1 2

Question 2

2.	Find the mean of first 10 whole numbers.
	11 2 5 9 2 17 4 7 2

Question 3

3.	Weights of 11 students (in kg) are given below. Find the mode weight. 53 57 51 60 48 56 59 57 44 43 57
	58 kg 57 kg 55 kg 59 kg 56 kg

Question 4

4.	Students of a certain locality use different modes of travel to school as given below. Find the mode of travel that has 415 students.
	School Bus Moped Bicycle RTC Bus By Foot

Question 5

5.	On a particular day, at a crossing in a city, the various types of 105 vehicles going past during a time-interval were observed as under: Type of Vehicle Two-wheeler Four-wheeler Three-wheeler Frequency 30 35 40 Out of these vehicles, if one is choosen at random, what is the probability that the choosen vehicle is a 'Three-wheeler' ?
	3 7 9 22 8 21 1 3 13 21

Question 6

6.	Weights of 26 students are given below. Find the mode. Weight (in kg) 45 46 49 50 51 52 60 No. of students 7 1 4 2 3 4 5
	43 kg 46 kg 45 kg 47 kg 44 kg

Question 7

7.	The following bar graph gives data regarding the favourite sport of 657 students of a school. Identify the table for the given bar diagram.
	Sport table tennis shotput tennis wrestling football badminton hockey swimming No. of students 162 27 36 99 108 144 18 63 Sport table tennis shotput tennis wrestling football badminton hockey swimming No. of students 162 27 99 18 36 108 63 144 Sport table tennis shotput tennis wrestling football badminton hockey swimming No. of students 36 63 18 108 99 27 144 162 Sport table tennis shotput tennis wrestling football badminton hockey swimming No. of students 36 162 108 27 18 99 63 144 Sport table tennis shotput tennis wrestling football badminton hockey swimming No. of students 63 99 18 36 144 162 27 108

Question 8

8.	Find the mean of all prime numbers between 30 and 60.
	133 3 309 7 313 7 223 5 311 7

Question 9

9.	Scores of 14 students are given below. Find the mode score. 79 85 89 86 71 74 77 79 76 72 74 87 81 74
	72 75 76 74 73

Question 10

10.	Heights of 14 students (in cm) are given below. Find the median height. 174 168 135 129 145 154 156 161 166 143 169 127 150 168
	157 cm 156 cm 153 cm 154 cm 155 cm

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