50,000 - 37,500 - G D 25,000 P 12,500 0.5 1.0 1.5 2.0 2.5 3.0 Crowdedness
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 predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Crowdedness In a Chance magazine article (Summer
2005), Danielle Vasilescu and Howard Wainer used data
from the United Nations Center for Human Settlements
to investigate aspects of living conditions for several
countries. Among the variables they looked at were the
country’s per capita gross domestic product (GDP, in $)
and Crowdedness, defined as the average number of
persons per room living in homes there. This scatterplot
displays these data for 56 countries:
trying to fit a model.
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