Assignment:
QUESTION 1. A purposive sample of psychology graduate students finishing up their dissertation at one online university (n = 80), one public brick-and-mortar university (n = 35), and one private brick-and-mortar university (n = 20) rated overall satisfaction with their dissertation chair using a scale of 0 (completely dissatisfied) to 100 (completely satisfied). Each university had 100 students finishing up their dissertation.
Which of the following would improve or expand external validity with respect to satisfaction with dissertation chair?
a. Only survey male psychology graduate students finishing up their dissertation
b. Survey more students who like rather than dislike their chair
c. Conduct focus groups instead of surveys
d. Sample from multiple online, public brick-and-mortar, and private brick-and-mortar universities.
QUESTION 2
Disregarding feasibility, from which of the following populations is a stratified random sample theoretically possible?
a. Individuals with IQs greater than 145
b. Current instructors at Walden University
c. Homeless individuals
d. Individuals who read the entire series of Harry Potter books
e. Students with statistics anxiety
f. Leprechauns
QUESTION 3
Graduate students who volunteered to participate were randomly assigned to a group that sang sad songs for 30 minutes or to a group that listened to sad songs for 30 minutes and then were measured on a situational emotional empathy scale. Which of the following indicates the type of research design?
a. Nonexperimental
b. Experimental
c. Quasi-experimental
d. Longitudinal
QUESTION 4
Graduate students at Brown University were randomly selected and asked to participate in either a yoga class or a meditation class and afterward were measured and compared on biological markers of stress. Which of the following indicates the type of study?
a. Nonexperimental
b. Experimental
c. Quasi-experimental
A researcher collected data from male and female Caucasian, African American, and Hispanic graduate students using quantitative measures of extraversion, academic self-efficacy, dissertation anxiety, and math anxiety, each on a scale of 0 to 100 with higher scores indicating more of the specific latent attribute (e.g., more anxiety). Each participant was also asked if they intended to conduct a qualitative or quantitative dissertation study and how many months they estimated it would take to complete the dissertation.
Note: All of the following items refer to the scenario.
1. Which of the following is a value?
a. Math anxiety
b. African American
c. Latent attribute
d. Sex
2. Extraversion is measured on which of the following levels of measurement? (refer to the scenario).
a. Nominal
b. Ordinal
c. Categorical
d. Qualitative
3. Which of the following would be an appropriate visual display of dissertation anxiety? (refer to the scenario).
a. Scatterplot
b. Pie chart
c. Histogram
d. Residuals chart
4. What is a dependent variable?
a. Male
b. Ethnicity
c. Academic self-efficacy
d. Sex
5. What is an independent variable?
a. Female
b. Sex
c. Caucasian
d. Latent attribute
6. Which of the following is a variable?
a. Male
b. Caucasian
c. Estimated months to complete dissertation
d. Graduate students
7. What kind of chart displays ethniticity?
A). Scatterplot
B). Pie Chart
C). Residuals Chart
D). Histogram