NBDHE-Community Health portion ~ 24 questions
- Random sample: This type of sample selection method reduces the chance of bias the most by
ensuring that each member of the population has an equal chance of being selected.
- Systematic sample: In this method, every 'nth' person is selected from a population after an initial
random start. For example, every 5th person in a line is chosen.
- Stratified sample: This sample involves dividing the population into subgroups based on certain
characteristics and then selecting samples from each subgroup. It helps reduce sample fluctuations by
ensuring representation from each subgroup.
- Judgement sample: This type of sample is chosen by an individual who has knowledge of the
population, introducing bias because the selection may be based on personal judgment or preferences
rather than randomization.
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 ✔️D. Convenience
What variable is the outcome of interest; should change in response to intervention?
A. Dependent
B. Independent ✔️A. Dependent
-DEPENDS on the intervention
What variable is also know as the intervention; being manipulated?
A. Dependent
B. Independent ✔️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 ✔️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 ✔️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 ✔️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 ✔️A. Sensitivity
- Random sample: This type of sample selection method reduces the chance of bias the most by
ensuring that each member of the population has an equal chance of being selected.
- Systematic sample: In this method, every 'nth' person is selected from a population after an initial
random start. For example, every 5th person in a line is chosen.
- Stratified sample: This sample involves dividing the population into subgroups based on certain
characteristics and then selecting samples from each subgroup. It helps reduce sample fluctuations by
ensuring representation from each subgroup.
- Judgement sample: This type of sample is chosen by an individual who has knowledge of the
population, introducing bias because the selection may be based on personal judgment or preferences
rather than randomization.
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 ✔️D. Convenience
What variable is the outcome of interest; should change in response to intervention?
A. Dependent
B. Independent ✔️A. Dependent
-DEPENDS on the intervention
What variable is also know as the intervention; being manipulated?
A. Dependent
B. Independent ✔️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 ✔️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 ✔️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 ✔️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 ✔️A. Sensitivity
