Devry Math 221 Week 2 Homework - Latest

DeVry MATH 221 Week 2 Homework - Latest

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DeVry MATH 221 Week 2 Homework - Latest 2015

MATH 221 Homework Week 2

1. Two variables have a positive linear correlation. Does the dependent variable increase or decrease as the independent variable increases?

Choose the correct answer below.

1. The dependent variable decreases

2. The dependent variable increases

2. Discuss the difference between r and p

Choose the correct answers below.

R represents the sample correlation coefficient.

P represents the population correlation coefficient

3. The scatter plot of a paired data set is shown. Determine whether there is a perfect positive linear correlation, a strong positive linear correlation, a perfect negative linear correlation, a strong negative linear correlation, or no linear correlation between the variables.

Choose the correct answer below.

1. no linear correlation

2. strong positive linear correlation

3. strong negative linear correlation

4. perfect negative linear correlation

5. perfect positive linear correlation

3 The scatter plot of a paired data set is shown. Determine whether there is a perfect positive linear correlation, a strong positive linear correlation, a perfect negative linear correlation, a strong negative linear correlation, or no linear correlation between the variables.

1. no linear correlation

2. strong positive linear correlation

3. strong negative linear correlation

4. perfect negative linear correlation

5. perfect positive linear correlation

4. Identify the explanatory variable and the response variable.

A golfer wants to determine if the amount of practice every year can be used to predict the amount of improvement in his game.

The explanatory variable is the amount of...