regression analysis was performed to determine if there is a relationship between hours of TV watched per day (xx) and number of sit ups a person can do (yy). The
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.
A
y=ax+b a=-0.8 b=31.651 r2=0.831744 r=-0.912
Use this to predict the number of sit ups a person who watches 10.5 hours of TV can do, and please round your answer to a whole number.
Given that the regression line is,
Y=ax+b
Here the independent variable x is the number of hours of TV watched per day and the dependent variable y is the number of sit ups a person can do.
Given that ,
a =-0.8 b=31.651
The regression equation is,
Y=ax+b
= (-0.8)x +31.651 ....(I)
The objective is to predict the number of sit ups a person who watches 10.5 hours of TV can do.
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