Island Size 12 |11 19 21 42 |13 23 28 |(hectares) Puffin Pop. 120 38 60 104 130 229 63 |111 132 Find the average population density and the variance in density among these islands. 21

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section: Chapter Questions
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4. Consider the following table of island sizes and their local population of puffins:28

Island Size
21
12
11
19
21
42
|13
23
28
(hectares)
Puffin Pop.
|120 38
60
104
130
229
63
111
132
Find the average population density and the variance in density among these islands.
Transcribed Image Text:Island Size 21 12 11 19 21 42 |13 23 28 (hectares) Puffin Pop. |120 38 60 104 130 229 63 111 132 Find the average population density and the variance in density among these islands.
Expert Solution
Step 1

Solution :

Island size(hectares) Puffin population
21 120
12 38
11 60
19 104
21 130
42 229
13 63
23 111
28 132

Population density = Population/ Land area

SO population density for island 1 = 120/21 = 5.714 per hectares

Population density for island 2 = 38/12 = 3.166 per hectares

We can calculate population density for remaining island using same method.

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