Study Design
4. Which is not a source of error?
A. Random sampling technique
B. Selecting “always” when responding to items
C. Misinterpreting negative response items
D. Incorrect data entry of participant responses
A. Random sampling technique
1. Which is an ordered response scale?
A. anxious __ __ __ __ __ __ __ calm
B. never sometimes usually always
C. no pain _________________worst pain ever
D. Prioritize a list of preferred leisure activities
B. never sometimes usually always
1. You are studying the benefits of a yoga program and make a list of all the students in your department. There are 200 students on the list. Then using a random number generator, you blindly select the names of 75 students to participate in the yoga program. What type of sample has been selected?
A. Quota sample C. Simple random sample
B. Stratified random sample D. Convenience sample
C. Simple random
2. Which is a semantic differential scale?
A. anxious __ __ __ __ __ __ __ calm
B. never sometimes usually always
C. no pain _________________worst pain ever
D. Prioritize a list of preferred leisure activities
A. anxious __ __ __ __ __ __ __ calm
You want to investigate how income differs based on educational attainment, but you know that this relationship can vary based on race. Which sampling methods will you use?
Simple Random Sample
Stratified Random sample
Observational design
Survey study
Stratified Random sample
3. A survey question asks participants to choose from a two mutually exclusive alternatives, e.g., Yes No This is which type of response?
A. Open-ended
B. Dichotomous
C. Continuous
D. Categorical
B. Dichotomous
4. You are studying the benefits of sun screen use in your Facebook friends. You divided your friends into Hispanic and Non-Hispanic, then included 10 friends from each ethnicity group who are willing to participate to complete your survey about sunscreen use. What type of sample has been selected?
A. Quota sample
B. Stratified random sample
C. Simple random
D. Convenience sample
A. Quota sample
5. Which is a Likert scale?
A. anxious __ __ __ __ __ __ __ calm
B. strongly disagree disagree agree strongly agree
C. no pain _________________worst pain ever
D. Prioritize a list of preferred leisure activities
B. strongly disagree disagree agree strongly agree
You have four strata with population sizes of 200, 400, 600, and 800. If you choose a sampling fraction of ½, this means you must randomly sample 100, 200, 300, and 400 subjects from each stratum, respectively.
Simple Random Sample
Stratified Random Sample
Proportionate Stratified Random Sample
Survey study
Proportionate Stratified Random Sample
You are Handpicking female and male participants of diverse races to do interviews with them on their experience of being first-generation students.
1. Convenience
2. Snowball
3. Quota
4. Purposive
4. Purposive