Given below is a frequency distribution table. Read it and answer the questions that follow:
(a) What is the lower limit of the second-class interval?

(b) What is the upper limit of the last class interval?

(c) What is the frequency of the third class?

(d) Which interval has a frequency of 10?

(e) Which interval has the lowest frequency?

(f) What is the class size?

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Question 82(ii)

Given below is a frequency distribution table. Read it and answer the questions that follow.
$\begin{matrix} C l a s s i n t e r v a l & F r e q u e n c y 10 - 20 & 5 20 - 30 & 10 30 - 40 & 4 40 - 50 & 15 50 - 60 & 12 \end{matrix}$
What is the upper limit of the last class interval ?

The marks scored by 40 candidates in an examination (out of 100) is given below:

75, 65, 57, 50, 32, 54, 75, 67, 75, 88, 80, 42, 40, 41, 34, 78, 43, 61,

42, 46, 68, 52, 43, 49, 59, 49, 67, 34, 33, 87, 97, 47, 46, 54, 48, 45,

51, 47, 41, 43.

Prepare a frequency distribution table with the class size 10. Take the class intervals as (30 - 39), (40 - 49), … and answer the following question:

(a) Which class intervals have highest and lowest frequency?

(b) Write the upper and lower limits of the class interval 30-39.

Q. If l is the lower class limit of a class in a frequency distribution and m is the mid-point of the class, then the upper class limit of the class interval is ________.

Prepare the frequency distribution table for the given set of scores:

39, 16, 30, 37, 53, 15, 16, 60, 58, 26, 28, 19, 20, 12, 14, 24, 59,

21, 57, 38, 25, 36, 34, 15, 25, 41, 52, 45, 60, 63, 18, 26, 43, 36, 18,

27, 59, 63, 46, 48, 25, 33, 46, 27, 46, 42, 48, 35, 64, 24.

Take class intervals as (10 -20), (20 − 30), … and answer the following:

(i) What does the frequency corresponding to the third class interval mean?

(ii) What is the size of each class interval? Find the midpoint of the class interval 30- 40.

(iii) What is the range of the given set of scores?

A frequency polygon is constructed by plotting frequency of the class interval and the

(a) Upper limit of the class

(b) Lower limit of the class

(d) any values of the class

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