NBDHE-Community Health portion UPDATED ACTUAL Exam Questions and CORRECT Answers

NBDHE-Community Health portion
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Which type of sample reduces chance of bias the most?
A. Stratified
B. Random
C. Systematic

D. Judgement - CORRECT ANSWER - B. Random


Which sample describes selecting everyone 'nth" person to participate. Example: Every 5th
person in line was chosen
A. Stratified
B. Systematic
C. Convenience

D. Random - CORRECT ANSWER - B. Systematic


In which sample do you select an element according to certain subgroups to diminish the chance
of sample fluctuations?
A. Stratified
B. Random
C. Judgement

D. Systematic - CORRECT ANSWER - A. Stratified


-usually with stratified, the subgroups have something in common.


Which sample describes someone who knows the population and selects the sample; familiarity
with the population? It also has the most bias?
A. Stratified

, B. Random
C. Judgement

D. Convenience - CORRECT ANSWER - C. Judgement
-pick people who will choose the results they want


Which sample describes a group being chosen based on ease. Example: standing outside of a
grocery store and giving survey to anyone you see.
A. Stratified
B. Judgement
C. Random

D. Convenience - CORRECT ANSWER - D. Convenience


What variable is the outcome of interest; should change in response to intervention?
A. Dependent

B. Independent - CORRECT ANSWER - A. Dependent


-DEPENDS on the intervention


What variable is also know as the intervention; being manipulated?
A. Dependent

B. Independent - CORRECT ANSWER - B. Independent


If you were to plot the following data: 100, 99, 97, 95, 93, 93, 92, 91, 89...what type of skew
would your graph represent?
A. Positive skew
B. Negative skew
C. Normal bell curve

D. None of the above - CORRECT ANSWER - B. Negative skew