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Week 3 Homework Assignment
Week 3 Homework Assignment
1. Determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If the relation is linear, determine whether it indicates a positive or negative association between the variables.
Use this information to answer the following.
Do the two variables have a linear relationship?
The data points have a linear relationship because they lie mainly in a straight line.
The data points do not have a linear relationship because they lie mainly in a straight line.
The data points have a linear relationship because they do not lie mainly in a straight line.
The data points do not have a linear relationship because they do not lie mainly in a straight line.
Do the two variables have a positive or a negative association?
The two variables have a association.
The two variables have a association.
None of the above
2. What does it mean to say that two variables are positively associated? Negatively associated?
What does it mean to say that two variables are positively associated?
There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable increases.
There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable decreases.
There is a linear relationship between the variables.
There is a relationship between the variables that is not linear.
What does it mean to say that two variables are negatively associated?
There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable increases.
There is a linear relationship between the variables.
There is a linear relationship between the variables, and whenever the value of one variable increases, the value of the other variable decreases.
There is a relationship between the variables that is not linear.
3. Determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If the relation is linear, determine whether it indicates a positive or negative association between the variables. Use this information to answer the following.
Do the two variables have a linear relationship?
The data points have a linear relationship because they do not lie mainly in a straight line.
The data points do not have a linear relationship because they do not lie mainly in a straight line.
The data points do not have a linear relationship because they lie mainly in a straight line.
The data points have a linear relationship because they lie mainly in a straight line.
If the relationship is linear do the variables have a positive or negative association?
The variables have a positive association.
The variables have a negative association.
The relationship is not linear.
4. Determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If the relation is linear, determine whether it indicates a positive or negative association between the variables.
Use this information to answer the following.
Do the two variables have a linear relationship?
The data points have a linear relationship because they do not lie mainly in a straight line.
The data points have a linear relationship because they lie mainly in a straight line.
The data points do not have a linear relationship because they do not lie mainly in a straight line.
The data points do not have a linear relationship because they lie mainly in a straight line.
Do the two variables have a positive or a negative association?
The two variables have a association.
The two variables have a association.
None of the above