Question

1. Consider a study where we use a person's education level to to predict how much money they have invested. What type of variable is the dependent variable?

		Binary
		Discrete
		Continuous
		Qualitative

2. Consider an experiment where we use the amount of sugar in cereal to predict what shelf the cereal is placed on in the grocery store. What type of variable is the independent variable?

	A.	Discrete
	B.	Continuous
	C.	Categorical
	D.	Qualitative

3. You want to determine whether right-handed pitchers get paid more than left-handed pitchers in Major League Baseball. What type of study would this be?

	A.	Observational
	B.	Experimental

4. In a Completely Randomized Design, replications of treatments are placed

		In numerical order
		Randomly within each column
		Randomly within block
		Randomly, independent of where other replications were placed

5. Choose all that apply. Population parameters

		Are rarely known
		Are estimated from sample statistics
		Are calculated from samples
		Can be found by sampling a large portion of the population

6. Choose all that apply. For a cluster sample

		All subjects have an equally likely chance of being selected
		Clusters are usually determined by convenience
		All subjects will be measured in a selected cluster
		Clusters have to be of equal size
		An equal number of subjects will be measured in every cluster

7._________ are used to infer about __________

	A.	Sample statistics; population parameters
	B.	Population parameters; sample statistics
	C.	Population statistics; sample parameters
	D.	Sample parameters; population statistics

Answer 1

1. Consider a study where we use a person's education level to to predict how much money they have invested. What type of variable is the dependent variable?

Qualitative

2. Consider an experiment where we use the amount of sugar in cereal to predict what shelf the cereal is placed on in the grocery store. What type of variable is the independent variable?

C. Categorical

3. You want to determine whether right-handed pitchers get paid more than left-handed pitchers in Major League Baseball. What type of study would this be?

A. Observational

4. In a Completely Randomized Design, replications of treatments are placed

Randomly, independent of where other replications were placed

5. Choose all that apply. Population parameters

Are rarely known

Are estimated from sample statistics

6. Choose all that apply. For a cluster sample

		All subjects have an equally likely chance of being selected
		Clusters are usually determined by convenience
		All subjects will be measured in a selected cluster

7._________ are used to infer about __________

A. Sample statistics; population parameters