Select any two quantitative variables in any dataset used thus far in the text, avoiding those analyzed
Question:
Select any two quantitative variables in any dataset used thus far in the text, avoiding those analyzed so far in Chapter 9.
(a) Identify the dataset and variables you are using. Indicate which variable you will use as the response variable and which as the explanatory variable.
(b) Create a scatterplot and describe it. Are the conditions for fitting a linear model reasonably met?
(c) Find the correlation between the two variables and give the p-value for a test of the correlation.
(d) Find the regression line and give the t-statistic and p-value for testing the slope of the regression line.
(e) Find the F-statistic and the p-value from an ANOVA test for the effectiveness of the model.
(f) Find and interpret R2.
(g) Comment on the effectiveness of this model.
Step by Step Answer:
Statistics Unlocking The Power Of Data
ISBN: 9780470601877
1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock