At a large state university, the Statistics department is interested in tracking the progress of its students from entry until graduation. In this example: X represents a student’s final numeric grade (out of 100) in an introductory statistics course Y represents a student’s final numeric grade (out of 100) in an upper-level statistics course The least-squares regression equation for this relationship is: Y = 5.70 + 0.91X Using the regression equation, for a student who received an 85 in the introductory statistics course, predict the student's numeric grade (out of 100) in the upper-level statistics course. Provide your answer as a numeric value rounded to two decimal places.
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.
At a large state university, the Statistics department is interested in tracking the progress of its students from entry until graduation. In this example:
- X represents a student’s final numeric grade (out of 100) in an introductory statistics course
- Y represents a student’s final numeric grade (out of 100) in an upper-level statistics course
The least-squares regression equation for this relationship is: Y = 5.70 + 0.91X
Using the regression equation, for a student who received an 85 in the introductory statistics course, predict the student's numeric grade (out of 100) in the upper-level statistics course. Provide your answer as a numeric value rounded to two decimal places.
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