FIRST QUIZ IN STATISTICS

Researchers ultimately want the answer to a research question to pertain to the

• sample

• accessible population

• target population

• world

When every member of the accessible population has an equal chance of being selected to participate in the study, the researcher is using

• simple random sampling

• stratified random sampling

• convenience sampling

• purposive sampling

If a researcher selected five schools at random and then interviewed each of the teachers in those five schools, the researcher used

• simple random sampling

• stratified random sampling

• cluster random sampling

• two-stage random sampling

Which of the following is an example of a random sampling method?

• systematic sampling

• convenience sampling

• purposive sampling

• quota random

Which of the following is an example of a nonrandom sampling method?

• convenience sampling

• stratified random sampling

• simple random

• cluster random

The order in which participants complete a task is an example of what level of measurement?

• nominal

• interval

• ordinal

• ratio

What level of measurement would be used if participants were asked to choose their favorite picture from a set of six?

• Ordinal

• Nominal

• Interval

• ratio

A researcher who wanted to determine the benefits of using a new beginning algebra study technique obtained permission from a school district to select 50 high school students. The researcher selected 50 beginning algebra students at random. The researcher selected 25 of these 50 students to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods. The most likely target population in this study is

• algebra students in the district

• all students in the district

• all algebra students

• the 25 students who learned the new study techniques

A researcher who wanted to determine the benefits of using a new beginning algebra study technique obtained permission from a school district to select 50 high school students. The researcher selected 50 beginning algebra students at random. The researcher selected 25 of these 50 students to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods. The method of sampling used in the study is

• simple random sampling

• stratified random sampling

• cluster sampling

• convenience sampling

The purpose of stratified random sampling is to make certain that

• every member of the population has an equal chance of being selected for the sample.

• the sample proportionately represents individuals from different categories of the population.

• the participants chosen for the study are the ones most likely to react to the treatment.

• the sample is more representative of the target population than the accessible population.