The number of high school students who have ever used marijuana for the years 1990 through 2006 is given by y= -0.1985x + 4.1573x + 26.6360, where x is the number of years from 1990. Use the model to estimate the years when the percent who ever used marijuana is greater than 42.3%. The percent of high school students who ever used marijuana is greater than 42.3 for the years through
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.
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