2.Tuition Fees: The following table shows the average annual tuition and fees at private and public 4-year colleges and universities for the school years 2009-2010 through 2014-2015. Year 2009-2010 2010-2011 2011-2012 Private 31,448 32,617 33,674 Public 15,014 15,918 16,805 17,474 18,372 19,203 35,074 36,193 37,385 2012-2013 2013-2014 2014-2015 a. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the linear correlation coefficient and the equation of the least-squares line for the tuition and fees at private 4- year colleges and universities, based on the year.
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.
Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the linear
coefficient
year colleges and universities, based on the year.
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