Page 3 - CL-8 -CH-6 (CBQ)

(i) What is the size of the class intervals?

(ii) Which class has the highest frequency?

(iii) Which class has the lowest frequency?

(iv) What is the upper limit of the class interval 250-275?

(v) Which two classes have the same frequency?

ANSWER
(i) The size of the class intervals is 25.

11 Assertion (A): A pie chart is divided into sectors to represent numerical data of different
values.
Reason(R): Pie chart is very effective when we have so many data series.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Ans. Option (c) is correct

12 Assertion (A): The perfect square number out of 2, 3,4 and 5 is 4.
Reason(R): A perfect square is a number that can be expressed as the product of an
integer by itself or as the second exponent of an integer

a)both Assertion and Reason are correct and Reason is the correct explanation of
Assertion.
(b) both Assertion and Reason are correct, but Reason is not the correct explanation of

Assertion.
(c) Assertion is correct but Reason is incorrect.
(d) Assertion is incorrect but Reason is correct.

Answer: (A)

13 CASE STUDY QUESTION

Observe the histogram given below and answer the questions given below:

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