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BIOSTATISTICS EXAM TESTBANK AND LATEST UPDATED STUDYGUIDE ACTUAL EXAM LATEST COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)

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BIOSTATISTICS EXAM TESTBANK AND LATEST UPDATED STUDYGUIDE ACTUAL EXAM LATEST COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)

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Biostatisticsg Finalg Examg 2023



Whatgareg2gbroadgareasgintogwhichgstatisticalgmethodsgfall?g-gANSWER
descriptive
statistics
g


inferentialgstatistics

whatgisgthegpurposegofgdescriptivegstatistics?g-gANSWER
describe,gorganize,gor
summarizegdata:
g


refergonlygtogthegactualgdatagavailable

whatgisgangexamplegofgdescriptivegstatistics?g-gANSWER
meangbloodgpressuregofga
group
g


successgrategofgagsurgicalgprocedure

whatgisgthegpurposegofginferentialgstatistics?g-gANSWER
makingginferencesgthat
gogbayondgthegactualgdata:
g


usuallyginvolveginductivegreasoning

whatgisgangexamplegofginferentialgstatistics?g-gANSWER -
gmeangbloodgpressuregofgallgAmericans


-
gexpectedgsuccessgrategofgagsurgicalgpoceduregingpatientsgwhoghavegnotgyetgunderg

onegthegoperation

whatgisgagpopulation?g-gANSWER
theguniversegaboutgwhichganginvestigatorgwishe
sgtogdrawgconclusions

doesgagpopulationgneedgtogconsistgofgpeople?g-gANSWER no

whatgisgagsampleg-gANSWER subsetgofgthegpopulation-
gthegpartgthatgisgbeinggobservedgorgstudied


whatgisgangelement?g-gANSWER agsinglegobservation,gdenotedgbygX

thegnumbergofgelementsgingagpopulationgisgdenotedgbygwhat?g-gANSWER

, Ngthegnumbergofgelementsginga

samplegisgdenotedgbygwhat?g-gANSWER
g


ngwhatgdoesgagpopulationgcons

istgof?g-gANSWER

allgelementsgfromgX1gtogXNgwh

atgdoesgagsamplegconsistgof?g-gANSWER ngofgNgelements

,mostgsamplesgusedgingbiomedicalgresearchgaregwhat?g-gANSWER
probability
samples
g


whatgaregprobabilitygsamples?g-gANSWER
samplesgingwhichgthegresearchergca
ngspecifygthegprobabilitygofganygonegelementgingthegpopulationgbeinggincluded

probabilitygsamplesgpermitgthegusegofgwhatgtypegofgstatistics?g-
gANSWERginferentialgstatistics


nonprobabilitygsamplesgallowgwhatgtypegofgstatisticsgtogbegused?g-
gANSWERgdescriptivegstatisticsgonly


whatgaregthegfourgbasicgkindsgofgprobabilitygsamples?g-gANSWER
1.gsimple
grandomgsamples

2. stratifiedgrandomgsamples

3. clustergsamples

4. systematicgsamples

whatgisgthegsimplestgkindgofgprobabilitygsample?g-gANSWER
simplegrandom
sample
g


howgisgagsimplegrandomgsamplegdrawn?g-gANSWER
ingsuchgagwaygthatgever
ygelementgingthegpopulationghasgangequalgprobabilitygofgbeinggincluded

agrandomgsamplegisgdefinedgbygwhat?g-gANSWER
thegmethodgofgdrawinggthe
sample,gnotgbygthegoutcome
g


whengisgagsamplegrepresentative?g-gANSWER
ifgitgcloselygresemblesgthe
populationgfromgwhichgitgisgdrawn
g


whengdoesgagsamplegorgresultgdemonstrategbias?g-gANSWER
ifgitgconsistentlygerrs
ingagparticulargdirection
g


aregbiasedgsamplesgrepresentative?g-gANSWER
no,gtheygaregunrepresentative.
truegrandomizationgisgproofgagainstgbias
g

, whatghappensgingagstratifiedgrandomgsample?g-gANSWER
thegpopulationgisgfirst
gdividedgintogrelativelyginternallyghomogenousggroups,gorgstrata,gfrom gwhichgra

ndomgsamplesgaregthengdrawn.

whengaregclustergsamplesgused?g-gANSWER
whengitgisgtoogexpensivegorglaboriou
sgtogdrawgagsimplegrandomgsamplegorgstratifiedgrandomgsample
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Bernard Rosner Fundamentals of Biostatistics
Publisher: 2015 ISBN: 9781305268920 Edition: Unknown

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