1. Classify each variable as qualitative or quantitative. The time it takes a st

Question

1. Classify each variable as qualitative or quantitative. The time it takes a student to complete a quiz.

2. Classify each variable as qualitative or quantitative. The gender of members of a Golf Club.

3. Identify which sampling technique was used to select the given sample. A researcher studying first graders selected a sample of 15 intact classes at 5 different schools in South Jersey. Each class spent two hours completing a designated task.

A) Random

B) Systematic

C) Stratified

D) Cluster

4. Identify which sampling technique was used to select the given sample. An auto insurance company divides their clients into groups according to what color car they own, what model car they have and marital status. Then 25 are selected from each group to determine whether they have been in an accident during the past 3 years or not.

A) Random

B) Systematic

C) Stratified

D) Cluster

Explanation / Answer

1) The time it takes to complete a quiz is a contiuous quantitative variable because it could have infinite number of values. ( also it could ordered )

2) The gender is a qualitative variable as it could only have 2 catagories: Male and female.

3) Stratified sampling is a probability sampling technique wherein the researcher divides the entire population into different subgroups or strata, then randomly selects the final subjects proportionally from the different strata.

Therefore this is a case of stratified sampling.

4) Stratified sampling is a probability sampling technique wherein the researcher divides the entire population into different subgroups or strata, then randomly selects the final subjects proportionally from the different strata.

Therefore this is a case of stratified sampling.

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