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Exam 5 “Foote sricet
carrie
ssimpie Random
ssystematic Random ~ every nth member
+Stvanfied Random - use subgroups /strara
e Multistage / cluster = sample ot dif. levels
Font Estimation
ideo Pop. Param, Sample stat:
Mean Be Bw RBs
a n
Variance ots Zux- pw? gtx die-%)t
nN met
Btol. Dev. ow ot lS tansy 5 wt [Bex e*
N any
Propornon we Pet
N “
sampling Error = sample stat. 7 pop. povam.
ping i por Pe
Sampling DISteeunoNs...
* For means!
central Tendency ~ ECR1 = aa
Standard ervey — Ty =
Aa
Metrieured Normality
Extensions...
Py Cae SRS et Og) Fe O-WBZ0
Pr Usa- 20% 2X H+ ZO_)S O-aBaH
Pe yn BOR SR Spee BTQIS OATH
ES
o%
Z=
© For propornions:
central tendency — ECF1= 7
sSrandard Error 7 op =a
A perex. mormal
po
Eto,
&
@ Pecision KuIEs, BIg Hv HME
Beates vo crits
Ra As
rE of
Zaare
Axe yo P-values t
prNalucs Py (A> Beale) i ae :
(#2 for 2 tavis) Zoriy
™ sampte Statistics
Keg t Ba Tg tog Pie ein aries regest) region?
Gommon Gineal & Scores
a O.10 Lert fright saw a
vem Fi ens
axo.05 terri right m1 Ne 1 EUS
born tre
ar o.et serrriaint 2.33) 233
both +l 2.975
esmalin, & Unknown
Breatc ™ K-Me
=
33 om
tevit OK or Hi2, dP EMHAID
BW p-Naiue = Pr (t® lteaicl?
(x2 fov 2 raiis?
© Proportion
Her wosy 2, SM
Mai Wht, S277 1p
Zeate* Poe
oF [Rew Arg)
us
mterval Esnrmation
© confidence Internars
Wider (Narrower) = More (Less? Confident
Lever of confidence T) precision ¥
Bn t30, 0 known
, Tn VSEPIMoE Fiwiden
Mah te BIO PAF SE Ptecatc 7 vy pevaiuc
$OO CIMT CER MI Zaye OE
°
AGE AR O.O1, Bays tl 2.875
AGI Git 20.05, Bapgetin aw
GOL GLE FEO. LO, Rey_s HH 14s
an<30, ® unknown
Loo (vray ett R tlm tua, deans) 2%
Le
ale
econfidence intervals for Propormons
OF
4 (FOR
wotsrretyvi at. p tin &
P ala
Searing Hypotheses for 2 means
@ Independent Samples
Riarge nis, o's Known
Beate = Ate
Bema nis, o's unknown
teate= — a Ae
Vsp* Cnt na)
Ly Gas sht tng O52
rors
Revit (a ev tig, d Fen, *ng-2)
e pependent Sampics
Mmarened | paared”
test freres+” “before farter”
Staring My peThescs
BD always use beforal artery
teate = A, as fa
Sq ~~
cevtt (dor ala deer) | 53 2 Sa
Aw
+ a
Sar Ate ay
More than 2 means
ANOVA
Agta e pra te Fe
Testing Mypotheses
Het wa (5, %, 8) pgp
Ha? ps (4, 4,7) pag
Type T Brrov — resecting & True ng
Type KE Error — Fauing to reject a false He
toads confidence OF not making & THyPS a
Hatat least 2 pop. means differ
SST = 2x - Rrorar
552 EL naacup Kanour ~ Xrorauy”
SSW22 (Ux- Kanour)*
ofes en Tukey's HSD, whieh
zk
dew ave s1g- avrrevences?
dey enn
