Study Guide Unit VI

Test covers :  Chi Square, Correlation, Simple Linear and Multiple Regression 

1.Simple linear regression. 
(a) Identify correlation coefficient between explanatory and response variable.
(b) Write the regression equation
(c) Use the regression equation for prediction
(d) Explain the meaning of the regression coefficient
(e) What is the coefficient of determination for this study?
(f) Determine the significance (p value) of the explanatory variable

2. Multiple Linear Regression
(a) Identify the variables in the study
(b) Name the correlation between the response variable and each explanatory variable
(c) Name the correlation between the explanatory variables
(d) Write the regression equation
(e) Use the regression equation for prediction
(f) What is the coefficient of determination for this study?
(g) What is the meaning of each explanatory variable?
(h) determine the significance (p value) of each explanatory variable


3. Chi Square Test of Independence
(a) Name the two variables in the study
(b) Name both hypothesis
(c) What is the sample Chi-Square?
(d) What is the critical Chi-Square?
(e) How many degrees of freedom?
(h) What is your conclusion?
(i) Calculate the expected value for a given cell


4. Chi-Square Test of Goodness of Fit
(a) What are the hypothesis/
(b) Name the degrees of freedom
(c) What is the sample Chi-Square?
(d) What is the critical Chi-Square?
(e) What is your conclusion?
(g) What is your conclusion?

6. What is the best predictor of a response variable when there is no explanatory variable?
7. Give two meanings for the coefficient of determination or R square
8. Explain the meaning of a regression coefficient in general terms