Exercise
5.1
1. Fill in the blanks.
(i) The collected information is called data.
(ii) An example of a Primary Data
is List of absentees in a class.
(iii) An example of a Secondary Data
is cricket scores gathered from a website.
(iv) The tally marks for number 7
in standard form is | | .
2. Viji threw a die 30 times and noted
down the result each time as follows. Prepare a table on the numbers shown using
Tally Marks.
1 4 3 5 54 6 6 4 3 5 4 5 6 5 2
4 2 6 5 54 6 6 4 5 6 6 5 4 1 1
Solution:
3. The following list tells colours
liked by 25 students. Prepare a table using Tally Marks.
Red Blue White Grey White
Green Grey Blue Green Grey
Blue Grey Red Green Red
Blue Blue Green Blue Green
Grey Grey Green Grey Red
Solution:
4. The following are the marks obtained
by 30 students in a class test out of 20 in Mathematics subject.
11 12 13 12 12 15 16 17 18 12
20 13 13 14 14 14 15 15 15 15
16 16 16 15 14 13 12 11 19 17
Prepare a table using Tally Marks.
Solution:
5. The table shows the number of calls
recorded by a Fire Service Station in one year.
Solution:
Complete the table and answer the
following questions.
(i) Which type of call was recorded
the most?
Answer: Other fires
(ii) Which type of call was recorded
the least?
Answer: Rescues
(iii) How many calls were recorded
in all?
Answer: 35
(iv) How many calls were recorded as False Alarms?
Answer: 7 .
Objective
Type Questions
6.
The tally marks for the number 7 in standard form is __________.
(a)
7
(b) | |
(c)
✔✔✔✔✔✔✔
(d)
Answer: (b)
7.
The tally marks | | | | PPPPPPPPP represents the number count
(a)
5
(b)
8
(c)
9
(d)
10
Answer: (c) 9
8.
The plural form of ‘datum’ is
(a)
datum
(b)
datums
(c)
data
(d)
datas
Answer: (c) data
Answers:
Exercise 5.1
1) (i) Data (ii) List of absentees in a class (iii) Cricket
scores gathered from a website (iv) | |
2)
3)
4)
5)
(i) other fires (ii) rescues (iii) 35 (iv) 7
6) (b) ||
7) (c) 9
8) (c) data
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