MATHEMATICS MCQ

The class mark of a class-interval is a. If its lower limit is a - b then its upper limit is :

Range of 14, 12, 17, 18, 16 and p is 20. If p > 0 then p =

The distribution of marks of students of a class in a test is shown in the table below.

Marks	Number of students
0 - 15	12
15 - 30	19
30 - 45	8
45 - 60	4

Which of the following statements are correct?
(i) We can definitely say that no one scored 60 marks.
(ii) The number of students who got at least 30 marks is 12.

Age of teachers of a school varies from 24 years to 72 years. Rishabh has to make a grouped frequency distribution table of age of teachers. Which among the following class intervals of age will be most appropriate to make meaningful conclusion in less time and effort?

Assertion (A): Classes of the form 1-10, 11-20, 21-30 etc. are said to be in inclusive form.
Reason (R): A frequency distribution in which each upper limit as well as lower limit is included is called an inclusive form.

Mid value for the class intervals 19.5 - 29.5 is :

Class marks of a distribution are: 47, 52, 57, 62, 67, 72, 77, 82. Class size of the given distribution is :

The width of each class of a frequency distribution is 5. The upper boundary of the class whose class mark is 25 is:

The width of each class interval of a grouped frequency distribution is 8. The lower boundary of the class whose mid-value is 10 is:

If 10, 15, 20,... are respectively the mid-values of the classes of a grouped frequency distribution, then the class whose mid-value is 25 is :

If 0 - 9, 10 - 19, 20 - 29, .... are the classes of a grouped frequency distribution, then the width of each class is :

In a grouped frequency distribution, the class intervals are 40 - 49, 50 - 59, … , 80 - 89. The upper boundary of the class (50 - 59) Is :

The classes of a frequency distribution are 30 - 34, 35 - 39, … , 50 - 54 The lower boundary of the class 35 - 39 is :

If in a grouped frequency distribution, the class intervals are 20 - 29, 30 - 39, 40 - 49,... then the observation 29.4 is included in the class :

If in a grouped frequency distribution, the classes are 20 - 30, 30 - 40, 40 - 50, ..., then the observation 40 is included in the class :

Mid value for the class intervals 19.5 - 29.5 is :

Class marks of a distribution are: 47, 52, 57, 62, 67, 72, 77, 82. Class size of the given distribution is :

The width of each class of a frequency distribution is 5. The upper boundary of the class whose class mark is 25 is :

The width of each class interval of a grouped frequency distribution is 8. The lower boundary of the class whose mid-value is 10 is :

If 10, 15, 20, … are respectively the mid-values of the classes of a grouped frequency distribution, then the class whose mid-value is 25 is :

If 0 - 9, 10 - 19, 20 - 29, ..., are the classes of a grouped frequency distribution, then the width of each class is :

In a grouped frequency distribution, the class intervals are 40 - 49, 50 - 59, . . ., 80 - 89. The upper boundary of the class (50 - 59) is :

The classes of a frequency distribution are 30 - 34, 35 - 39, …, 50 - 54. The lower boundary of the class 35 - 39 is :

If in a grouped frequency distribution, the class intervals are 20 - 29, 30 - 39, 40 - 49, … then the observation 29.4 is included in the class :

If in a grouped frequency distribution, the classes are 20 - 30, 30 - 40, 40 - 50, ..., then the observation 40 is included in the class :

Assertion (A) : Classes of the form : 1 - 10, 11 - 20, 21 - 30 etc. are said to be in inclusive form.
Reason (R) : A frequency distribution in which each upper limit as well as lower limit is included is called an inclusive form.