Data on number of minutes spent studying for their final exam in Statistics and their score out of 100 have been collected by an educational researcher at a regional public university. For these variables, find the least squares regression equation and compute r and r squared. Write a sentence or two summarizing and interpreting your results. Student Study time in minutes Exam Score Ali 194 91 Bobette 127 60 Colin 189 93 Dara 156 69 Ely 136 75 Felicia 165 90 George 146 68
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.
Data on number of minutes spent studying for their final exam in Statistics and their score out of 100 have been collected by an educational researcher at a regional public university. For these variables, find the least squares regression equation and compute r and r squared. Write a sentence or two summarizing and interpreting your results.
|
Student |
Study time in minutes |
Exam Score |
|
Ali |
194 |
91 |
|
Bobette |
127 |
60 |
|
Colin |
189 |
93 |
|
Dara |
156 |
69 |
|
Ely |
136 |
75 |
|
Felicia |
165 |
90 |
|
George |
146 |
68 |
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