The table below contains the average public school classroom teacher's salaries, S, for an 11-year period. Letting t=0 represent 1990, use a graphing utility to find a linear model for the data. Year 1990 1991 1992 1993 1994 1995 Salary 31600 35244 34952 34987 36363 37891 Year 1996 1997 1998 1999 2000 Salary 36875 38622 40938 40057 41330 Salary, written as a function of t is given by
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.
The table below contains the average public school classroom teacher's salaries, S, for an 11-year period. Letting t=0 represent 1990, use a graphing utility to find a linear model for the data.
| Year | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 |
| Salary | 31600 | 35244 | 34952 | 34987 | 36363 | 37891 |
| Year | 1996 | 1997 | 1998 | 1999 | 2000 |
| Salary | 36875 | 38622 | 40938 | 40057 | 41330 |
Salary, written as a function of t is given by
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