Parent Category: Level 2
- Distinguish between random and stratified sampling?
- Which is wider, a 95% or a 99% confidence interval?
- When you construct a 95% confidence interval, what are you 95% confident about?
- What assumptions are made in the construction of a confidence interval on the mean?
- For what does p > 0.05 stand?
- What is the formal definition of the 'mean'?
- When computing a confidence interval, when do you use t and when do you use z?
- What is the effect of sample size on the width of a confidence interval?
- Assume a researcher found that correlation between a test he or she developed and job performance was 0.5 in a study of 25 employees. If correlations under 0.30 are considered unacceptable, would you have any reservations about using this test to screen job applicants?
- What assumptions are made in the construction of a confidence interval on µ?
- Define independent and dependent variables.
- Categorize the following variables as being qualitative or quantitative:
Rating of job satisfaction
Occupation aspired to
Number of words remembered
- An experiment is conducted to examine the effect of punishment on learning speed in rats. What are the independent and dependent variables?
Multiple Choice Questions:
- This institution requires that all covered research projects be reviewed by the board before the research takes place.
- This type of quantitative research involves looking at conditions that have already occurred and then collects data to investigate the possible relationships between these conditions.
- This is an in-depth study of a single program (e.g., an activity, event, process, or individuals) based on extensive data collection.
d. Case Study
- The process of assigning individuals at random to groups or to different groups in an experiment.
c. Random assignment
d. Content analysis
- One-on-one interviews are
a. Time consuming
c. Should be with people not hesitant to speak
d. All of the above
- This type of survey is used to collect data about current attitudes, opinions, or beliefs at one point in time.
b. Cross -Sectional
c. Document Analysis
d. Time-point Analysis
- A newspaper can be used as part of what type of research?
a. Cross-sectional survey
b. Artifact analysis
c. Document analysis
d. None of the above
- Reliability can be measured by:
a. the degree at which measurement changes after repeated action
b. the differences within the measurements in a given time period
c. the extent that researchers explored alternative explanations for experimental conclusions.
d. The degree the measurement remains the same over time.