Question

The data below represent the per capita​ (average) disposable income​ (income after​ taxes) for 25 randomly selected cities in a recent year. Complete parts​ (a) and​ (b).

30,268    34,294 36,884   40,160

30,544 34,710 37,334   41,083

30,726 34, 823   37,848 41,432

32,175 35,158 38,456 52,535

33,053 35,587 38,670

33,642 35,752 38,822

34,026 35,948 39,728

​(a)  Construct a frequency distribution with the first class having a lower class limit of​ 30,000 and a class width of 6000.

B) Construct a relative frequency distribution with the first class having a lower class limit of​ 30,000 and a class width of 600

Answer 1

​(a)   frequency distribution with the first class having a lower class limit of​ 30,000 and a class width of 6000. is

Class interval	Frequency
30000-36000	10
36000-42000	6
42000-48000	0
48000-54000	1

B) relative frequency distribution with the first class having a lower class limit of​ 30,000 and a class width of 600

Class interval	Frequency	Rel . Frequency
30000-36000	10	0.588235
36000-42000	6	0.352941
42000-48000	0	0
48000-54000	1	0.058824
total	17