Question

The data represent the​ time, in​ minutes, spent reading a political blog in a day. Construct a frequency distribution using 55 classes. In the​ table, include the​ midpoints, relative​ frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least​ frequency?	19	23	25	0	10
	7	9	27	18	10
	13	1	7	28	21
	29	9	8	24	5

Complete the​ table, starting with the lowest class limit.

​(Simplify your​ answers.)

Class	Frequency	Midpoint	Relative Frequency	Cumulative Frequency
nothing​-nothing	nothing	nothing	nothing	nothing

nothing​-nothing

nothing

nothing

nothing

nothing

nothing​-nothing

nothing

nothing

nothing

nothing

nothing​-nothing

nothing

nothing

nothing

nothing

nothing​-nothing

nothing

nothing

nothing

nothing

Which class has the greatest​ frequency?

The class with the greatest frequency is from

nothing

to

nothing.

Which class has the least​ frequency?

The class with the least frequency is from

nothing

to

nothing.

Answer 1

Given data is

19, 23, 25, 0, 10, 7, 9, 27, 18, 10, 13, 1, 7, 28, 21, 29, 9, 8, 24, 5

Frequency distribution table:

Class	Frequency	Midpoint	Relative frequency	Cumulative frequency
0 - 5	3	0+5/2 = 2.5	3/20 = 0.15	0.15
6 - 11	7	8.5	0.35	0.15+0.35 = 0.5
12 -17	1	14.5	0.05	0.5+0.05 = 0.55
18 -23	4	20.5	0.2	0.55+0.2 = 0.75
24 -29	5	26.5	0.25	0.75+0.25 = 1
Total	20		1

Cumulative frequency 3, 10, 11, 15, 20 is also right.

The class with the greatest frequency is from 6 to 11

The class with the least frequency is from 12 to 17