100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Biostatistics Notes Tutorials $3.74
Add to cart

Summary

Summary Biostatistics Notes Tutorials

 21 views  0 purchase
  • Course
  • Institution

Tutorial Notes for the Biostatistics course.

Preview 2 out of 5  pages

  • January 15, 2023
  • 5
  • 2021/2022
  • Summary
avatar-seller
Review day I

mean
· mean

median
population -> .g, N
·
·


L
mode
stand.
·

·
Sample -> X,S, n
↑ dev ·
variance
types 1)
x
Data colours
ranR 2
-
·

& < 2

-Qualitative nominal ordinal measurement -> population -> 0
ata seconds
- Quantitative interval, ratio, censored ->
sample -
2 E(X- x)2


yearstime estimated
=


-




Rounding s
nnx
· -
with
↓ -


n10 -> +1 decimal




population =mean


o standard
=

deviation

sample:X mean
=




standard
s= deviation

mode= frequentvalue
most

median middle value

meanor
all
figures
#Figures


Review days
Distributions discrete
Probability - >
calculations
·

Uniform -> Proutcomes
equal
O= Pr(A) 1
-T 2(pixxi) 1
·
=
=

=


· Addition rule




-promauzenom-comexe,
geinzinganiseasesseen
-> PrCAUB) PrCA) + Pr(B)-PrCANB)
=




independentevents productsee
·
conditional

-> PrCAIB) PCA ePr(x) =




xe
-
M




Review day 3

nina
distribution
one-sided.2A
sided:

-!
2B S= standard deviation
·
(X - N(7,64))
xz
S x2
h.
2- score
-
=




#,.0",*,
·




42
M
=




·
standard error (se) Se standard error
=




<
stanct.dev.
Ep
secFl-noone
o

re
same
=




xlim p =(z
=
* O)
A use 2 -
score to find
P vice versa
samples
two different


Review
day u
·
Decision error

shypothesis No rejected when true
testing -> type I (2)
·
No includes
-
=<p> a -> type 1 (B) No rejected
not when false
↑ we ↓
t his
test always not
rejected




andopenote
·Morescearora
MA CLAIM

·
z
Mo M
=

=
one
·
sample size (n)
&> one-sided en (78)"
=
(zc zB/2 +




-> two-sided n (z) (z(x
= =

z p)2
+




C =

always probability this means i s two
it sided

, Review days Chisquared -

R
Paired
data
↓ alles is gely
Parametric t-test
↓normal distribution
·
of fit
-
goodness -

-> H0: A 0, =
MA.A =0
·
Hodata follows distribution (ex uniform distribution) If it's not
follow distribution
MA doesn't Chi square d
-
-> T
pdF
=
n
= -
1


normally distributed
·
X=E Ej(2 dF k 1
No Watje wilte n ·.
non-parametric Wilcoxin matched pair
Ej
= -




↳ noclasses verwaent
yn1)zz ntl. 1)
+




-(
=




normal distribution
&resample ofi t

verwaching
HA:

·
Parametricit-testtable 3] data
Impaired
F testFollowed by Z-testCT-test
zT
MdF parametric
·
=




Tctdf,0/ztp>d

EF-teapt.No.Inosyargiance.soit
n
=
-
1 -


obtained
->
Mx
=




Itdf;0-confidence
interval
sits an
& less reliable than t-test -



p>0.05 n 12 2
spooled
+ -




·
non-parametric Wilcoxon rankorder table 5)
-> Ttest:MO:MI -


/2 0
=


HA:M1-M2
Find A rank (find 0
-
range ofTCA
/ITC) M1 12
=




Mi M2


x
aT ↓
normal distribution
El-CM
=

parametric
-
There is a
the
significant

n
i
= difference between
two variables




Review day 6 if
yOU Tukey
· Kramer (a)
I have 3 or

Oeway anougparametric (3) more data
frequencies) 2q
1.5x
- nb)
=
(no



silicon
on
·
Ho.
M1 M2 n# samplesper group Jruskal Wallis
Non parametric=
=




M3
=




HA:atleast1 => Ntotal sample size ·
Confidence
-> rank data, sumbank
mean rank

sign diff between individuals =34.3 12 intervals nicRiR V
-1

E(X)
MT -H
=

· =
=
=




-> Scheffe
M. -Mz M1 MIN
TRANSAS dEKH Mable
= -




· SStotal ES(XY) =


2 Mono
N(MA) v
-
dfbetw =k-1
nz reject
SS between ENT. Mi
Tukey-Kramer
=


-
NMP dewithin N-K
->



sres=mswithin
=




reChitns
So within [x EniMis
=

-

X
within Sres = mi-mo xi -xjIq =
->


ANOVA:




Freeposception
Source -> HSD
aantal data
F-table
HSD(ni,nj) qX (hi
h) ↓




paramarorausp
=
+




dF N =
-
k
within 4

ay* 2n z
=




= nantal
samples
chospitals)


Review day 7
mcnemor's (2 matched
group
·



continuity correction (n > 15)
groups with freq
-> sample divided into a a, b, and

of effects/side effects - only outcomes
·
Binomial coccurence ab
sp,
atc
en e
=




x
=

n
-> sample - Zc
c]
=




-zc =

cjCI.M1 -
M2 pi
=
-
P2 = (z +


22/2.

-> (+ x p = = [z zcz p +
·
Outliers
suspected
-




-
Grubbs: I value


youcalanar
set


-> Z independent
6
=1pect- ↑
to not rejected
-> HoT -Me 0 (no -> Dixon's
difference) suspected value
=




samples 71 22
=




QQlimeMonot
HA:M1-M2 0 from
low-high index
-> sort
values
M #72 (difference
rejected
=n-
X x
-a
et Q An
Xn 2




-zaousci-iclEcti
e
-

=




xn -
X3
n0 12
= -



n 13
=


when there
are 2 samples -> Box Approach multiple suspected values
Plot

- (... - Mr pi
=
-
P2 I[z(n+nz)

if
they
+


22/2 pP+
Ptype) -> interquartile
range (IQR) =G3Q,
say more than #
·
Poisson ↓ ifthey sayless than o z-table, 0.05 -> lower limit (x) = Q- , QR upper limit(lu)
IGR

MisamplenzcTxNtoTME**I+ZRCRS
QS +
=




values outside
MA* range between likluare outliers
1x. -
X2) -
1
32

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller ebrar2404. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.74. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

53022 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$3.74
  • (0)
Add to cart
Added