Purchase Solution

Regression and Correlation Assumptions

Not what you're looking for?

Ask Custom Question

1) When is regression used? What are the assumptions of Linear Regression?
2) What is correlation? How does it differ from regression? What is the interpretation of the correlation coefficient?

Purchase this Solution

Solution Preview

1) When is regression used? What are the assumptions of Linear Regression?

Correlation and regression analysis are both used to investigate relationships between two variables (x and y).

In a linear regression, you fit the data to a model of the form

where α and β are the parameters of the model (the y-intercept and the slope of the line) and ε is the error term (each data point has a corresponding εi term, which shows how far away from the line the point falls).

You assume ...

Purchase this Solution

Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.