NBDHE-Community Health portion - 24 questions
and answers
Which type of sample reduces chance of bias the most?
A. Stratified
B. Random
C. Systematic
D. Judgement - Answers-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 - Answers-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 - Answers-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 - Answers-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 - Answers-D. Convenience
.What variable is the outcome of interest; should change in response to intervention?
A. Dependent
B. Independent - Answers-A. Dependent
, -DEPENDS on the intervention
.What variable is also know as the intervention; being manipulated?
A. Dependent
B. Independent - Answers-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 - Answers-B. Negative skew
-tail will be longer on left
.The CDC and Department of Health and Human Services falls under which level of
government public heath?
A. International
B. Federal
C. State
D. Local - Answers-B. Federal
.If the mean score is 50 with a standard deviation of 5, what would a -1 standard
deviation be?
A. 49
B. 51
C. 45
D. 55 - Answers-C. 45
- 50 is the mean then standard deviation is 5, so if its minus 1 you would actually
subtract whatever the standard deviation is one time. If it was -2, you would subtract the
standard deviation twice, making it 40.
.The ability of a test to correctly identify the presence of a disease describes what term?
A. Sensitivity
B. Specificity - Answers-A. Sensitivity
.The ability of a test to correctly identify the absence of a disease describes what term?
A. Sensitivity
B. Specificity - Answers-B. Specificity
.Which of the following describes a positive correlation?
A. As x increase, y decreases
B. As x decreases, y decreases
C. A x increases, y decreases - Answers-C. As x increases, y decreases
.Which of the following describes a negative correlation?
and answers
Which type of sample reduces chance of bias the most?
A. Stratified
B. Random
C. Systematic
D. Judgement - Answers-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 - Answers-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 - Answers-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 - Answers-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 - Answers-D. Convenience
.What variable is the outcome of interest; should change in response to intervention?
A. Dependent
B. Independent - Answers-A. Dependent
, -DEPENDS on the intervention
.What variable is also know as the intervention; being manipulated?
A. Dependent
B. Independent - Answers-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 - Answers-B. Negative skew
-tail will be longer on left
.The CDC and Department of Health and Human Services falls under which level of
government public heath?
A. International
B. Federal
C. State
D. Local - Answers-B. Federal
.If the mean score is 50 with a standard deviation of 5, what would a -1 standard
deviation be?
A. 49
B. 51
C. 45
D. 55 - Answers-C. 45
- 50 is the mean then standard deviation is 5, so if its minus 1 you would actually
subtract whatever the standard deviation is one time. If it was -2, you would subtract the
standard deviation twice, making it 40.
.The ability of a test to correctly identify the presence of a disease describes what term?
A. Sensitivity
B. Specificity - Answers-A. Sensitivity
.The ability of a test to correctly identify the absence of a disease describes what term?
A. Sensitivity
B. Specificity - Answers-B. Specificity
.Which of the following describes a positive correlation?
A. As x increase, y decreases
B. As x decreases, y decreases
C. A x increases, y decreases - Answers-C. As x increases, y decreases
.Which of the following describes a negative correlation?
