Sampling Statistics

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

In order to use samples to estimate something from the population, the sample should be _________________ the population.

• exactly the same as

• nothing like

• representative of

• larger than

A Statistics student did a research on the time spent by Grade 12 students playing video game. He selected the subjects by using the Table of Random Numbers. What technique is used?

• Simple Random Sampling

• Stratified Random Sampling

• Systematic Random Sampling

• Cluster Random Sampling

According to a random telephone survey of 200 adults, 75% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• 200 adults

• adults in the U.S.

• 75% of adults

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

A researcher who is studying the effects of educational attainment on promotion conducted a survey of 50 randomly selected workers from each of these categories: high school graduate, with undergraduate degree, with master’s degree, and with doctoral degree. What technique is most appropriate?

• Simple Random Sampling

• Systematic Random Sampling

• Stratified Random Sampling

• Cluster Random Sampling

A sample should be

• representative of  only middle school students only

• a very large group

• representative of the population

• representative of people who volunteer

Mrs. Trahan samples her class by selecting 5 girls and 7 boys.  This type of sampling is called?

• Stratified

• Systematic

• Simple

• Cluster