- CLASS – VII
- MATHEMATICS
- Data Handling
1.
Following are the margins of
victory in the football matches of a league:
1,3,2,5,1,4,6,2,5,2,2,2,4,1,2,3,1,1,2,3,2,6,4,3,2,1,2,5,4,3,1,2,2,2,2,4,1,1,5,5,5,3,3,2,3,2,4,1,2,2,
Represent the
above observations by tally marks and find the mode of this data.
2.
The mean of three numbers is 10.
The mean of other four numbers is 12. Find the mean of all numbers.
3.
Find the mean of first six
multiples of 6.
4.
“Median of data may as may not be
from the given data” Justify.
5.
Calculate the mean, median and mode of the
following data: 6,2,5,4,3,4,4,2,3,4
6.
Find the mean and median of first
nine composite numbers.
7.
What is the probability of drawing
out a vowel from English alphabet?
8.
There are 6 cards in a box,
numbered 1 to 6 marked on each of them
(a) Find the probability of an even number card
(b) Find the probability of an odd number card
(c) Find the probability of composite number card
9.
The temperature (in 0C)
in a city on 7 days of a certain week is recorded as follows
Days |
Mon |
Tue |
Wed |
Thu |
Fri |
Sat |
Sun |
Temperature |
42 |
40 |
38 |
43 |
40 |
44 |
45 |
(a) Find the range of temperature of the above data
(b) Find the mean temperature of the week
(c) On how many days, the temperature was less than the mean temperature?
10. The following data gives total marks (out of 600) obtained by six
students of a particular class. Represent the data on a double bar graph.
Student |
Ajit |
Rakhi |
Deepali |
Jayant |
Radhika |
Harshit |
Marks
obtained in English |
450 |
550 |
350 |
260 |
340 |
540 |
Marks
obtained in Hindi |
490 |
560 |
400 |
450 |
500 |
340 |
11. The given table shows the average intake of nutrients (in calories) by rural
and urban groups in a particular year. Using a suitable scale draw a double bar
graph to compare the given data
Food stuff |
Pulses |
Fruits |
Milk |
Fish |
Fats |
Leafy Vegetables |
Other vegetables |
Rural |
35 |
35 |
70 |
14 |
7 |
14 |
49 |
Urban |
49 |
63 |
77 |
21 |
14 |
21 |
84 |
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