Page 126 - Ganit Kaushal

There are four options (Q.5 to Q.12), out of which only one is correct. Choose the correct option.

5. The games liked by 20 students in a locality are as follows:
C, B, T, C, H, F, C, T, T, H, C, C, F, F, C, H, C, T, C, C,
where C stands for cricket, B stands for Badminton, T stands for Tennis, H stands for Hockey and
F stands for Football. The game liked by the least number of students is
(a) C (b) B (c) F (d) H
6. If the shoe sizes of 15 students in a class are as follows: 4, 5, 5, 5, 4, 6, 4, 5, 6, 4, 4, 5, 6, 4, 5, then
the frequency of shoe size 6 is
(a) 4 (b) 5 (c) 6 (d) 3
7. Tally marks || represent the number
(a) 12 (b) 10 (c) 4 (d) 13

8. The ages of 20 students travelling to Dharamshala on an educational trip are as follows:
14, 15, 14, 15, 15, 16, 16, 13, 15, 15, 15, 14, 12, 13, 14, 15, 16, 13, 14, 15
The number of students who are less than 15 years old is
(a) 17 (b) 9 (c) 8 (d) 20
9. Marks obtained in a Mathematics test by a class of 28 students are as follows:
5, 10, 14, 15, 14, 14, 15, 20, 18, 22, 25, 25, 25, 14, 15, 12, 12, 13, 14, 15, 20, 25, 25, 21, 22, 23, 24, 25
Tally marks to represent students who scored more than 20 marks are
(a) |||| |||| | (b) |||| |||| ||| (c) || (d) |||| |||| |||

10. In a pictograph, ‘*’ represents 3 items. How will 21 items be represented?
(a) |||| |||| |||| |||| | (b) **** **** **** **** *
(c) ******* (d) |||| |||| ||
11. A bar in a bar graph is 7.5 cm tall. The scale used is 1 cm = 25 units. What frequency is represented
by the bar?
(a) 187.5 (b) 1875 (c) 7.50 (d) 750
12. A 5 cm tall bar represents the frequency 2500. The scale used is 1 cm =
(a) 2500 units (b) 500 units (c) 250 units (d) 25 units
13. Fill in the blanks.

(a) Data presented in the same form as collected is called __________ data.
(b) Data collected by an investigator or surveyor with a specific purpose in mind is called
__________ data.

(c) When data collected by someone else is used, it is called __________ .
(d) The number of times an observation repeats itself is called the _________ of the observation.
14. State whether the given statements are True (T) or False (F).
(a) Data can be presented pictorially either by bar graphs or in tabular form.
(b) The total of all the frequencies is the total number of observations in the data.
(c) In a bar graph, spacing between two bars can vary.
(d) In a bar graph, the spacing between two bars is the same as the width of each bar.
(e) Tally marks for an observation occurring 6 times are represented as ||||||.
(f) A frequency distribution table consists of three columns: observations, tally marks and frequency.

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