AP Stats

Identify the sampling method:

At a local community College, five math classes are randomly selected out of 20 and all of the students from each class are interviewed.

• SRS

• Stratified

• Cluster

• Systematic

• Convenience

The names of 70 contestants are written on 70 cards, The cards are placed in a bag, and three names are picked from the bag.

• SRS

• Systematic

• Stratified

• Cluster

• Convenience

If you have 1,000 schools on the list, number them from 000 to 999 and read the table three digits at a time. What are the first five schools in this sample?

• 24, 19, 83, 72, 41

• 241, 983, 724, 152, 579

• 2419, 8372, 4152, 5761, 0849

Which of the following would reduce the variability in sampling?

• Using a larger sample size

• Using a smaller sample size

• Assigning individuals randomly

• Using Judgement Sampling

Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is assigned to a student. This is ______________ random sampling.

• Systematic

• Simple

• Stratified

• Cluster

Identify the population and sample.

A survey of 1535 American households found that 18% of households do not own a computer.

• Population: 1535 American households

  Sample: 18% of households

• Population: All American households

  Sample: 1535 American households

• Population: All American households

  Sample: 18% of households

• Population: 1535 American households

  Sample: 276 households

Identify the population and the sample.

• Population: All elementary school children

  Sample: 2625 elementary school children surveyed

• Population: All elementary school children

  Sample: 28% of the children

• Population: 2625 elementary school children

  Sample: 28% of the children

• Population: 2625 elementary school children

  Sample: 735 elementary school children

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

• Simple Random Sample

• Stratified Random Sample

• Voluntary Response

• Systematic Random Sampling

A nonsampling error occurs when someone gives an incorrect response to a sample survey. What is it called when a systematic pattern of incorrect responses occurs?

• nonresponse

• bias

• response bias

• undercoverage

1000 surveys from ESPN are mailed but only 150 are returned. Most of the returned surveys said they hated football.

• This is an example of undercoverage bias.

• This is an example of voluntary response bias.

• This sample could have both voluntary response and non-response bias.

• This is good data, most people really hate football.