100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Biostatistics Notes $9.77   Add to cart

Class notes

Biostatistics Notes

 6 views  0 purchase
  • Course
  • Institution
  • Book

Biostatistics basic notes for university.

Preview 2 out of 9  pages

  • March 28, 2023
  • 9
  • 2020/2021
  • Class notes
  • -
  • All classes
avatar-seller
BIOStatistics

SEM 3 I FALL 2020
-




Tanya

Karakyriakou

kriekenpitplein ( G ) b-d

, 02/09/2020


Class 1 : Introduction & Basic Concepts
Probability frequency of the occurrence of an event


Pex) Odds / ( t + Odds)
=




Odds :
probability of event
happening / probability of event not
happening
odds =
P ( x ) / ( t Pex )) -





Outcome space = the set of all possible outcomes of an event




Making Abstract concepts Concrete T.mg?em?ePanm.piaetneeie-oman-o
comtnctvalisdittedam
GntentValidityidoyovrvaiabesaveraeethereeerar#
④ Provide a conceptual definition .
What do
you mean by X ?

② Provide operational definitions How variables sampled defined measured? aspects of the construct
of interest?
. are
your , ,




Population VS. Sample



taxenp.fpumea a.de?incd/estinfmatesaeuM-esthe
the entire collection of a collection of units

units of interest from


which sample is taken the
a
population
.




1--
Probability Samples Non -




probability Samples ( aka biased samples)
any sample for which that ends up in

particular for

unit the sample be which that a unit will
a can
any sample you cannot
compete the chance
given

calculated in advance .
end
up in the
sample .





require a SAMPLING FRAME +
accident all * snowball
convenience

+
Simple random sample
+
cluster sample t quota + purposive

+
stratified random sample &
Not suited for testing numerical hypotheses about populations

* can calculate a MARGIN OF ERROR


& (parameters)
SUITE'S for testing numerical hypotheses about population characteristics .




PET Terms

⑨ Probability There is 1/2 chance of getting flipping it
: a the heads side of a coin when once .




② Odds : The odds of getting the tails side of a coin when
flipping it once are even .




③ Odds Ratio :
The odds ratio of getting the tails side of a coin when
flipping it once is 50/50 .




④ Outcome Space : When
flipping a coin there are two outcomes i
taikorhea = outcome space ( aka sampler space) .




⑤ Conceptual definition
'

: A
coin has two sides front humeri call heads ( illustration) is called the faith
'


.
The is called the .
The back



⑥ Operational definition : To measure chances of
getting head or tails ,
a coin is
going to be flipped 10 times and the times of heads Ho and tails 110 will be measured .
. .




④ Construct Validity :
Measuring systolic top
when
examining proportion of high bp patients in a sample .




⑧ Content validity : high top can be captured by the systolic bp measurement .




⑨ Probability Sample : 5%5%0 every student Teacher randomly choses the question by chasing ( blind to student assignment)
gets assigned a number who answers number number
a .
.




⑥ Non probability Sample Sample :
population is selected be of being acquainted to the researcher ( convenience sampling)
-



.




④ Sampling frame : All patients in the
cardiology dept .

of a hospital when researching high top in that hospital la real wider
region .

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 tanyakarakyriakou. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $9.77. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

76462 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
$9.77
  • (0)
  Add to cart