Assignment Solution: Analyzing the Relationship Between Height and Foot Length: Correlation, Regression, and Prediction

Preview 2 of 4 pages

See the first 2 pages exactly as they appear in the document.

Page 1
Read page 1 as text
Assignment Solution Assignment Objectives: Construct a scatter plot for two variables; compute a correlation coefficient, and a regression equation. Use the regression equation to predict a value of the dependent variable. Purpose: In this week's assignment, we will use our height/length of foot data from week 2 to calculate and interpret the correlation coefficient. We also find a regression equation and use it to predict length of foot based on height. Assignment Description: This week we will use the data collected in week one for height and length of foot. We will determine whether there is a significant relationship between the two variables. 1. Create a scatter plot for height and length of foot. We will assume here that height influences length of foot so height will be the independent variable. Does it appear from the plot that there is a relationship between the two variables? What type of relationship would that be? The scatter plot for the height and length of foot is given as below: From this scatter plot, it is observed that there is strong positive linear relationship exists between the given two variables height and length of foot. This is a positive linear relationship. 2. Using excel, calculate the correlation coefficient, r , for the two variables. How would you interpret this measure? 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 Foot size (Inch) Foot size (Inch)
Page 2

2 more pages in the full document

Unlock it once and it stays in your library, ready to chat with or turn into flashcards.