Few questions on regression analysis
Not what you're looking for?
1) Explain how we test independent against dependent variables in a regression analysis? What's the set up?
2) Does a correlation as presented in a regression analysis graph imply an actual casual relationship?
For example - can I say with a high degree of confidence "that on every full moon a chimpanzee will scratch itself" and say it was because there was a full moon?
3) How are regression analyses often misused / misinterpreted at work or in the news? Cite an example.
Purchase this Solution
Solution Summary
This posting answers following question on regression analysis.
Solution Preview
Business, Other
Year 2
Statistics Questions
________________________________________
I need help understanding regression analysis:
Explain how we test independent against dependent variables in a regression analysis? What's the set up?
Regression analysis helps in understanding the impact of independent variable on dependent variable i.e. how much of variation in dependent variable is explained by the independent variables. This is generally done through Least Squares Method (OLS), where the squared error between actual and predicted values of the dependent variable is minimized.
The equation for regression analysis is set up in the following format:
Y = a + bX + e
Y = dependent variable, X = Independent variable
a = Intercept, b = ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
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
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
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.