Question

# The density of people per square kilometer for African countries is in table #1. Create a...

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

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