Number of Stores, y DATA Year, x 2007 7262 2008 7720 2009 8416 2010 8970 2011 10,130 2012 10,773 2013 10,942 2014 11,453 Spreadsheet at LarsonPrecalculus.com
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.
Sketching a Scatter Plot In Exercises
21 and 22, sketch a scatter plot of the data.
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