Question

1. Name two ways in which two variables could be related. Select the two most correct...

1. Name two ways in which two variables could be related. Select the two most correct answers. Choose the correct answer below.

A) Strong and moderate B) Moderate and negative C) Weak and moderate D) strong and weak

2. Name a graph that can be used to quickly illustrate the relationship between two variables? Choose the correct answer below.

A) Histogram B) Regression line C) Scatter plot D) Time series graph.

3. What do we mean by the strength of the linear relationship between two variables? Choose the correct answer below.

A) Strength is used to describe the size of the points in the set.
B) Strength is used to describe how the points are close to each other.
C) Strength is used to describe which set of points is stronger.
D) The set of points that controls the other set of points is called the strength of the relationship.

5. What do we mean by the direction of the linear relationship between two variables? Choose the correct answer below.

A) Direction describes if the points are rising or falling as you go from left to right.

B) Direction is used to describe if the points are pointing east or west.

C) Direction is used to describe possible directions when arrows are placed on the points.

D) Direction is used to describe if the points are pointing North or South.

7. What is the notation for the sample linear correlation coefficient and for the population linear correlation coefficient? Write down your answers on the spaces provided.

A) Population: _______________ B) sample:______________________________

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

1. Name two ways in which two variables could be related.

B) Moderate and negative

2. Name a graph that can be used to quickly illustrate the relationship between two variables?

C) Scatter plot

3. What do we mean by the strength of the linear relationship between two variables?

B) Strength is used to describe how the points are close to each other.

5. What do we mean by the direction of the linear relationship between two variables?

A) Direction describes if the points are rising or falling as you go from left to right.

7. A) Population:

B) sample :

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