AP Stats Unit 1 Practice Test

Name the sampling method:

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience

Name the sampling method:

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• simple random sample

• convenience

• Self - selected (volunteer)

Name the sampling method:

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Volunteer response

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling

Name the sampling method:

The president of a college randomly selects 2 students from each department to serve on a student advisory board.

• Convenience

• Systematic

• Stratified

• Simple Random

All of the following are elements of a good experimental design EXCEPT

• A control treatment

• A random sample

• multiple treatments

• A single group of people

A report in a medical journal notes that the risk of developing Alzheimer's disease among subjects who regularly opted to take Ibuprofen was about half the risk among those who did not.  Is this good evidence that Ibuprofen is effective in preventing Alzheimer's?

• Yes, because the study was a randomized, comparative experiment
• No, because the effect of Ibuprofen is confounded with the placebo effect
• No, because this is an observational study.  An experiment would be needed to confirm (or not confirm) the observed effect.
• Yes, because a 50% reduction can't hapen just by chance

Which of the following is true based on the graph?

• The number of men who preferred sports is greater than the number of women who preferred sports.

• The number of women who preferred dance is greater than the number of men who preferred dance.

• The proportion of women who preferred TV is greater than the proportion of men who preferred TV.

• The proportion of men who preferred sports is greater than the proportion of women who preferred sports.

Which of these is NOT part of a 5 number summary?

• maximum

• mean

• median

• Q1

• minimum

Your company has developed a new treatment for acne. You think men and women might react differently to the medication, so you seperate them into two groups. Then the men are randomly assigned to two groups and the women are randomly assigned to two groups. One of the two groups is given the medication and the other is given a placebo. The basic design of this study is

• completely randomized

• blocked by gender

• completely randomized, blocked by gender

• randomized, blocked by gender and type of medication

• a matched pairs design