Mathematics
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?
24 - 26, 26 - 28, 28 - 30, and so on
24 - 30, 30 - 36, 36 - 42, and so on
24 - 48, 48 - 72
none of these
Related Questions
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.
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
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.
only (i)
only (ii)
both (i) and (ii)
none of these
Range of 14, 12, 17, 18, 16 and p is 20. If p>0, then p= ?
10
26
32
35