Exam 2 Flashcards
Population
group of interest
Target population vs accessible population
Target: entire population of interest
Accessible: portion of target population that researcher can access
When choosing a sample, what is the overall goal?
To choose a subset of the population that reflects the characteristics of the population
What type of sampling is less likely to produce a representative sample?
Non-probability sampling
What are the types of nonprobabillity sampling techniques?
- Convenience sampling
- Quota sampling
- Consecutive sampling
- Purposive sampling
A researcher would like to begin a study. He decides to select patients who are most convinently available. What type of sampling is he utilizing?
Convenience sampling
A researcher decides to utilize Quota Sampling, what steps must the researcher take?
- Identify the population strata
- Determine how many are needed from each strata
- Create a convenience sample from each strata
What is expected when utilizing consecutive sampling?
Recruiting from accessible population over a certain time period or to reach a certain sample size
A researcher has decided to handpick participants for his study. What type of sampling is he utilizing?
Purposive Sampling
What type of sampling’s used mostly in nursing? And what must one keep in mind with this type of technique?
Nonprobablity sampling.
Keep in mind that these may be bias and making results misleading
What are the two types of probability sampling techniques?
- Simple random sampling
2. Systemic sampling
Which sampling techniques are best for validity?
Probability sampling
What is simple random sampling?
Selecting randomly from a sampling frame (list of population)
What is systemic sampling?
Selecting a sample from a specific interval on population list
A research chooses every 20th person on a population list. What type of sampling is he utilizing?
Systemic sampling
What are the components of a research design?
- Intervention
- Comparisons
- Control over Confounding Variable
- Blinding
- Relative timing
- Location
What criteria is involved in the casual relationship of research questions?
- Time
- Relationship
- Confounders
What does the P-Value tell you?
Whether or not statement is true
What does the effect size tell you?
whether or not the issue matters
What does the confidence interval tell you?
whether or not the issue is correct
