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PUBH 201 CSUF exam 2 questions with correct answers
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PUBH 201 CSUF exam 2 questions with correct answers
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PUBH 201 CSUF exam 2p-value - correct answer ✔✔shows the probability that the observed result could have happened by its
own
p<.05 means result is statistically significant
p=.05 there is a 5% chance results are wrong
confidence interval - correct answer ✔✔more narrow probability, less random error chances
probability - correct answer ✔✔used to explain the variety and frequency of past outcomes under
similar conditions as a way of predicting what should happen in the future
descriptive statistics - correct answer ✔✔used to describe a population with frequency, measures of
position, dispersion of variation, and measures of central tendancy
Inferential Statistics - correct answer ✔✔more than describing a population, but the relationship among
those variables. Describes data but does not infer relationships
EXAMPLE: more education leads to a healthier life, its just a relationship not a cause
standard deviation - correct answer ✔✔the smaller the bell, the closer the numbers are and the study is
more reliable
census - correct answer ✔✔mandatory by the constitution every 10 years. Serves as denominator for
most data (Age, sex, race, ethnicity)
measures of central tendancy - correct answer ✔✔MEAN: average #
MEDIAN: # in middle
MODE: # occurring the most
Dispersion of variation - correct answer ✔✔RANGE: Highest #- lowest #
, VARIANCE
STANDARD DEVIATION
Risk Assessment - correct answer ✔✔Identifies events and exposures that may be harmful and estimates
the probabilities of their occurrence and the extent of harm they may cause.
For well-known risks, we can calculate from historical data.
For poorly understood risks, we must make many assumptions.
Risk Perception - correct answer ✔✔psychological factors, the result of the apparent irrationality of the
public in response to risks that experts estimate to be small.
Is classified on two scales: dread and knowability.
Biostatistics - correct answer ✔✔the science used to interpret the numbers that describe the health of
the population.
Endemic - correct answer ✔✔constant presence of disease in a geographic area
EXAMPLE: cx pox in the US
Pandemic - correct answer ✔✔Sn epidemic that has spread to several countries
EXAMPLE: influenza
Epidemic - correct answer ✔✔a sudden increase on number of cases of disease above normal
expectancy
EXAMPLE: measeles
Epidemiology - correct answer ✔✔the study of the distribution and determinants of disease frequency
in human population
distribution of disease - correct answer ✔✔who/when/where
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