PHC 4069 Final Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
A variable measured the number of school programs a high school student participates in.
This variable type is
[ Select ] ["Quantitative", "Qualitative"]
This variable's categorization is [ Select ] ["Interval", "Ordinal", "Ratio", "Nominal"] - CORRECT
ANSWER Variable: Quantitive
Categorization: Ratio
A variable measured what was the highest level of degree someone has earned, the variable has the
following values: High School, Bachelor, Masters, PhD
This variable type is
[ Select ] ["Quantitative", "Qualitative"]
This variable's categorization is
[ Select ] ["Nominal", "Interval", "Ratio", "Ordinal"] - CORRECT ANSWER Variable:
Qualitative
Categorization: Ordinal
Based on the following research question:
Does having diabetes lead to people increasing the average number of servings of fruit they normally
eat per day?
The variable average number of servings of fruit eaten per day is the Dependent Variable
The variable having diabetes is the Independent Variable - CORRECT ANSWER Dependent
Variable
Independent Variable
, Based on the following research question:
Does playing video games make someone more likely to pursue a degree in a STEM field?
The variable do you play video games
[ Select ] ["Independent Variable", "Dependent Variable"]
The variable pursuing a degree in a STEM field
[ Select ] ["Independent Variable", "Dependent Variable"] - CORRECT ANSWER video
games: independent variable
STEM: dependent variable
A study is observational when the researcher lets things happen naturally. - CORRECT
ANSWER True
When the sample is selected by randomly selecting naturally occurring groups and then selecting
subjects from the those naturally occurring groups, what type of sampling is being done? - CORRECT
ANSWER Cluster
When the sample is selected by using subjects that are most easily contacted, what type of sampling is
being done? - CORRECT ANSWER Convenience
A student at a college administers a survey to estimate the average number of miles driven weekly
among on-campus students at USF. The student sends a questionnaire to 200 randomly selected on-
campus students, from a complete list of on-campus students provided by the registrar. What type of
sampling has occurred? - CORRECT ANSWER Simple Random
If a researcher is given a list of all 51,000 students that go to the university and each student has a
10% chance of being selected to participate in the study, what type of sampling has occurred? -
CORRECT ANSWER Simple Random
Select all the studies where the explanatory variable is measured first and the outcome variable is
measured at a later time point. - CORRECT ANSWER Cohort and Clinical Trial
A researcher is curious to see if GPA of a student influences their intent to apply for college. So they
ask their sample what is their current GPA and if they are going to apply for college. What type of
study design is this? - CORRECT ANSWER Cross-Sectional
QUESTIONS AND CORRECT ANSWERS
A variable measured the number of school programs a high school student participates in.
This variable type is
[ Select ] ["Quantitative", "Qualitative"]
This variable's categorization is [ Select ] ["Interval", "Ordinal", "Ratio", "Nominal"] - CORRECT
ANSWER Variable: Quantitive
Categorization: Ratio
A variable measured what was the highest level of degree someone has earned, the variable has the
following values: High School, Bachelor, Masters, PhD
This variable type is
[ Select ] ["Quantitative", "Qualitative"]
This variable's categorization is
[ Select ] ["Nominal", "Interval", "Ratio", "Ordinal"] - CORRECT ANSWER Variable:
Qualitative
Categorization: Ordinal
Based on the following research question:
Does having diabetes lead to people increasing the average number of servings of fruit they normally
eat per day?
The variable average number of servings of fruit eaten per day is the Dependent Variable
The variable having diabetes is the Independent Variable - CORRECT ANSWER Dependent
Variable
Independent Variable
, Based on the following research question:
Does playing video games make someone more likely to pursue a degree in a STEM field?
The variable do you play video games
[ Select ] ["Independent Variable", "Dependent Variable"]
The variable pursuing a degree in a STEM field
[ Select ] ["Independent Variable", "Dependent Variable"] - CORRECT ANSWER video
games: independent variable
STEM: dependent variable
A study is observational when the researcher lets things happen naturally. - CORRECT
ANSWER True
When the sample is selected by randomly selecting naturally occurring groups and then selecting
subjects from the those naturally occurring groups, what type of sampling is being done? - CORRECT
ANSWER Cluster
When the sample is selected by using subjects that are most easily contacted, what type of sampling is
being done? - CORRECT ANSWER Convenience
A student at a college administers a survey to estimate the average number of miles driven weekly
among on-campus students at USF. The student sends a questionnaire to 200 randomly selected on-
campus students, from a complete list of on-campus students provided by the registrar. What type of
sampling has occurred? - CORRECT ANSWER Simple Random
If a researcher is given a list of all 51,000 students that go to the university and each student has a
10% chance of being selected to participate in the study, what type of sampling has occurred? -
CORRECT ANSWER Simple Random
Select all the studies where the explanatory variable is measured first and the outcome variable is
measured at a later time point. - CORRECT ANSWER Cohort and Clinical Trial
A researcher is curious to see if GPA of a student influences their intent to apply for college. So they
ask their sample what is their current GPA and if they are going to apply for college. What type of
study design is this? - CORRECT ANSWER Cross-Sectional
