# Significance, Association, Correlation, and Regression

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### Question Description

Write: In your initial post of at least 550 words, using Exercise 3 on pages 179-180 and Exercise #3 on page 211, complete the following:

• Using Exercise 3 (pages 179-180),
• State the null hypothesis.
• Calculate the difference between the proportions or means.
• Calculate the standard error of the difference in proportions or means.
• Conduct the eyeball test and state whether you would accept the null hypothesis or reject the null hypothesis, and explain you reasoning.
• Using Exercise 3 (page 211),
• What is the regression equation for this relationship?
• Interpret the regression equation: What exactly is the effect of x on y? (Look over the Hint provided.)
• Interpret the y-intercept: What does the intercept tell you, exactly?
• Discuss the following: Based on the equation, what is the predicted value of y for census tracts that are 15% low-income? What about census blocks that are 25% low-income?
• Interpret the Adjusted R-square of .94 for these data.

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antonioEY
School: University of Maryland

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Anonymous
Good stuff. Would use again.

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