Question

# 1. You are trying to see if there is a relationship between height and weight. Write...

1. You are trying to see if there is a relationship between height and weight. Write down the following data, then by using a software program (e.g., Excel and SPSS), find the correlation between the following data:

Height: 5' 11", 6' 2", 4' 3", 5' 5", 6' 6", 5' 2", 5' 9"

Weight: 175, 190, 102, 150, 210, 130, 160

a. Using the above data, find the regression equation using weight as the dependent variable and height as the independent (predictor) variable. What is it?

b. If someone is 6'0" tall, how much do you think he would weigh? If someone was 4'10" tall, what would her estimated weight be?

c. Is the correlation strong, moderate or weak?

2. Input the following data and calculate the correlation after guessing what it might be.

Body fat %: 15, 17, 14, 15, 16, 17, 15, 16, 15

Height: 72", 55", 66", 59", 78", 70", 59", 62", 52"

a. Create a scattergraph of the above data using body fat % as the y variable and height as the x variable. Before doing this, however, predict what the data will look like on the graph.

b. Create a regression line of best fit for the above data. Does the regression line confirm your predictions?

c. Simply by looking at the regression line, guess what someone's body fat % is if the person was 60" tall. Then calculate the value using the regression equation. Were the values similar?

d. Is the correlation strong, moderate or weak?

First, we have to convert height to decimal form

 X 5.92 6.17 4.25 5.42 6.5 5.17 5.75 Y 175 190 102 150 210 130 160

a)

 X Y X.Y X.X 5.92 175 1036 35.0464 6.17 190 1172.3 38.0689 4.25 102 433.5 18.0625 5.42 150 813 29.3764 6.50 210 1365 42.25 5.17 130 672.1 26.7289 5.75 160 920 33.0625

The regression Line is

b)

At x=6, y will be

Y=-111.659+48.459*6=179.095

At x= 4'10" = 4.83

Y=-111.659+48.469*4.83=122.446

C)

High Correlation

#### Earn Coins

Coins can be redeemed for fabulous gifts.

##### Need Online Homework Help?

Most questions answered within 1 hours.

##### Active Questions
• What are some new things concerning training implementation that we can do now that we could...
• On Angel Street, a driver's speed just before an accident is distributed as U(23,33). Given the...
• 1. The next day when you and your lab partner returned to lab and ready to...
• Please show all work. 3) Based on the best available econometric estimates, the market elasticity of...
• You are evaluating a project for The Tiff-any golf club, guaranteed to correct that nasty slice....
• including all states of matter.A. solid calcium carbonate, CaCO3, reacts with sodium hydroxide (NaOH) to form...