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Summary STAT 2000 Unit 4

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STAt 2000 Unit 4 Notes with practice questions and tables









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Uploaded on
October 28, 2025
Number of pages
2
Written in
2024/2025
Type
Summary

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Differencebetweentwopopulationproportions


it in iiiviimiiiaiii.in
Pi A 2 SE
ifa intervalforthe
confidence differencein
twopopulationparameters notincluded
does
thenoisnotaplausiblevalue rejectHo
itallvaluesintheconfidenceintervalfor
Pi P2arepositive p spr
P Paarenegative p cpz




intwopopulationmeans
Difference pairedttestforameandifference
quantitativemean in
interested paired
differences

twosampletestindependentanddependent twoobservationsfromoneperson
together
independentseparate dependent intervalhastwopoints
confidence


Chisquaredgoodnessoffittest
largetest
statisticmoreevidenceagainst
df
skewedrightas increasesdistributionislessskewed
themeanofthedistributionisequaltotheat
thestandarddeviationisequalto2df
nonegativevalues 2 0meansobserved expected
observed expected
x issmallweakevidenceagainstHo
observed expected x islargestrong Ho
against
evidence

tellsussomething
residualactual expectedsign
standardizedresidual observed expected expected
positiveresidualobserved expected

negativeresidualobserved expected
outside
anything the 2,2 intervalisunusual




chisquaredtestforindependence
twocategoricalvariables
relationship associationbetween


correlationcoefficientisonly
applicablefor
datawithalinearform

1negativeand 1 positive arestronglinearpattern
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