Question

The density of people per square kilometer for African countries is in table #1. Create a frequency distribution, relative frequency distribution, and cumulative frequency distribution using 8 classes. Table #1: Data of Density of People per Square Kilometer 15 16 81 3 62 367 42 123 8 9 337 12 29 70 39 83 26 51 79 6 157 105 42 45 72 72 37 4 36 134 12 3 630 563 72 29 3 13 176 341 415 187 65 194 75 16 41 18 69 49 103 65 143 2 18 31

Answer 1

Solution:

The class width is calculated as:

The frequency distribution table is given below:

Class Interval	Frequency
2-81	39
81-160	8
160-239	3
239-318	0
318-397	3
397-476	1
476-555	0
555-634	2

The relative frequency distribution table is:

Class Interval	Relative Frequency
2-81	0.6964
81-160	0.1429
160-239	0.0536
239-318	0
318-397	0.0536
397-476	0.0179
476-555	0
555-634	0.0357

The cumulative frequency distribution table is:

Class Interval	Cumulative Frequency
2-81	39
81-160	47
160-239	50
239-318	50
318-397	53
397-476	54
476-555	54
555-634	56