PUB561 ACTUAL UPDATED Questions
and CORRECT Answers
Statistics - CORRECT ANSWER -the study of the collection, organisation, analysis, interpretation
and presentation of data
Branches of statistics - CORRECT ANSWER -Theoretical statistics
Applied statistics
Theoretical statistics - CORRECT ANSWER -theoretical basis for applied statistics
Applied statistics - CORRECT ANSWER -focus on developing/adapting methods to deal with
difficult problems thrown up by the sciences
Biostatistics - CORRECT ANSWER -focus on using statistics to answer problems in biology,
(bio)medical and health sciences
results from a ______ are used to infer results from the entire unknown ______ - CORRECT
ANSWER -sample, population
for results to be valid, a sample needs to reflect _______ - CORRECT ANSWER -characteristics of
population
3 Sources of variation in samples - CORRECT ANSWER -random error
systematic error or bias
confounding
Random error is - CORRECT ANSWER -individual differences
, Systematic error or bias involve 2 things... - CORRECT ANSWER -- measurement error
(systematic distortion of results)
- selection bias (sample does not represent population)
Confounding is - CORRECT ANSWER -an alternate explanation for results
Research design - two types - CORRECT ANSWER -experimental
observational
Experimental design requires - CORRECT ANSWER -intervention group
control group
randomisation between groups
Observational studies are - CORRECT ANSWER -based on observing what happens
correlational or descriptive
Correlational is a - CORRECT ANSWER -summarisy of the association between variables
Matched case controle sudy - CORRECT ANSWER --Retrospective
-a sample population that have been match by a shared variable
-observation
Research questions usually focus on _____ - CORRECT ANSWER -PICO
population
intervention
comparison
outcome-assessing differences (between groups, across time in the same groups) /establishing
relationships between variables
and CORRECT Answers
Statistics - CORRECT ANSWER -the study of the collection, organisation, analysis, interpretation
and presentation of data
Branches of statistics - CORRECT ANSWER -Theoretical statistics
Applied statistics
Theoretical statistics - CORRECT ANSWER -theoretical basis for applied statistics
Applied statistics - CORRECT ANSWER -focus on developing/adapting methods to deal with
difficult problems thrown up by the sciences
Biostatistics - CORRECT ANSWER -focus on using statistics to answer problems in biology,
(bio)medical and health sciences
results from a ______ are used to infer results from the entire unknown ______ - CORRECT
ANSWER -sample, population
for results to be valid, a sample needs to reflect _______ - CORRECT ANSWER -characteristics of
population
3 Sources of variation in samples - CORRECT ANSWER -random error
systematic error or bias
confounding
Random error is - CORRECT ANSWER -individual differences
, Systematic error or bias involve 2 things... - CORRECT ANSWER -- measurement error
(systematic distortion of results)
- selection bias (sample does not represent population)
Confounding is - CORRECT ANSWER -an alternate explanation for results
Research design - two types - CORRECT ANSWER -experimental
observational
Experimental design requires - CORRECT ANSWER -intervention group
control group
randomisation between groups
Observational studies are - CORRECT ANSWER -based on observing what happens
correlational or descriptive
Correlational is a - CORRECT ANSWER -summarisy of the association between variables
Matched case controle sudy - CORRECT ANSWER --Retrospective
-a sample population that have been match by a shared variable
-observation
Research questions usually focus on _____ - CORRECT ANSWER -PICO
population
intervention
comparison
outcome-assessing differences (between groups, across time in the same groups) /establishing
relationships between variables
