Fill in the blanks. a. In the forward selection method, a predictor variable is entered into the regression equation at a step if the absolute value of the t-statistic for its utility is greater than ______ and is ______ among all such t-statistics for variables not yet entered. b. In stepwise regression, a predictor variable that is entered at one step can be deleted at a later step if the absolute value of its t-statistic is _______ among all such t-statistics for predictor variables in the regression equation and if the absolute value of its t-statistic is less than _________. c. A commonly used value for tenter that corresponds to an approximate 5% level of significance for testing the utility of an individual predictor variable is _______.
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.
Fill in the blanks.
a. In the forward selection method, a predictor variable is entered into the regression equation at a step if the absolute value of the t-statistic for its utility is greater than ______ and is ______ among all such t-statistics for variables not yet entered.
b. In stepwise regression, a predictor variable that is entered at one step can be deleted at a later step if the absolute value of its t-statistic is _______ among all such t-statistics for predictor variables in the regression equation and if the absolute value of its t-statistic is less than _________.
c. A commonly used value for tenter that corresponds to an approximate 5% level of significance for testing the utility of an individual predictor variable is _______.
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