ESSENTIALS OF STATISTICS-W/APLIA
ESSENTIALS OF STATISTICS-W/APLIA
4th Edition
ISBN: 9781305611177
Author: HEALEY
Publisher: CENGAGE L
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Concept explainers

Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as p…
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Chapter 3, Problem 3.7P

Find the appropriate measure of central tendency for each variable displayed in problem 2.5. Report each statistic as you would in a formal research report.

Median Income for Canadian Provinces and Territories, 2000 and 2011 (Canadians dollars)
Province or Territory 2000 2011
Newfoundland and Labrador 38,800 67,200
Prince Edward Island 44,200 66,500
Nova Scotia 44,500 66,300
New Brunswick 43,200 63,930
Quebec 47,700 68,170
Ontario 55,700 73,290
Manitoba 47,300 68,710
Saskatchewan 45,800 77,300
Alberta 55,200 89,930
British Columbia 49,100 69,150
Yukon 56,000 90,090
Northwest Territories 61,000 105,560
Nunavut 37,600 65,280
Mean =
Median =

Problem 2.5: The scores of 15 respondents on four variables are as reported here. These scores were taken from a public-opinion survey called the General Social Survey (GSS), the data set used for the computer exercises in this text. For the actual questions, see Appendix G. The numerical codes for the variables are as follows:

Sex Support for Gun Control Level of Education Age
1 = Male
2 = Female		 1 = in favor
2 = Opposed		 0 = Less than HS
1 = HS
2 = Jr. college
3 = Bachelor’s
4 = Graduate		 Actual years
Case Number Gender Support for Gun Level of Education Age
1 2 1 1 45
2 1 2 1 48
3 2 1 3 55
4 1 1 2 32
5 2 1 3 33
6 1 1 1 28
7 2 2 0 77
8 1 1 1 50
9 1 2 0 43
10 2 1 1 48
11 1 1 4 33
12 1 1 4 35
13 1 1 0 39
14 2 1 1 25
15 1 1 1 23
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