100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Lecture notes Measurement Theory & Assessment I $3.21   Add to cart
Quickly navigate to
Preview
  2.  
  3. Vrije Universiteit Amsterdam (VU)
  4.  
  5. Measurement Theory & Assessment I

Class notes

Lecture notes Measurement Theory & Assessment I
 18 views  0 purchase
  • Course
  • Measurement Theory & Assessment I
  • Institution
  • Vrije Universiteit Amsterdam (VU)

These notes are mostly about the calculations and contain the information needed that is not on the formula sheet. It is really handy to have these notes for a quick recap of the course! The notes have information on the classical test theory (CTT) formula, the confidence interval formulas, perc...

[Show more]

Preview 1 out of 3  pages

Document information

  • March 23, 2021
  • 3
  • 2020/2021
  • Class notes
  • Siri noordermeer
  • All classes

Subjects

  • classical test theory
  • reliability
  • validity
  • confidence interval
  • percentiles
  • normal distribution
  • skew
  • decision theory
  • multitrait multimethod
  • item difficulty index
  • item characteristic curve
  • item discrimi

Written for

  • Vrije Universiteit Amsterdam (VU)
  • Psychologie
  • Measurement Theory & Assessment I
All documents for this subject (3)

Seller

avatar-seller
micolijn

Content preview

Same rate for the variante (02)
Classical test theory ( CTT ) : X = T te
→
0×2=0+2+0,2
→
ob served score =
Erve score t Error p p î


The Ieliabitity is the ratio ( verhouding ) between the Observer score (X) and
the truc score ( T )


trueteamiiir
de waarheid '
IImetselaar
←
↳±
0×2


The smaller the error ( e) ,
the bette the ratio between T and X
→
hogere reliabitity
68% CI → Xi I 1 '

SDe
90 % CI → Xi ± 1,65 .

5De
95 % CI → Xi ± 1,96
-

5 De → This on e is used mast comm only
99 % CI → Xi ± 3 .
5 De
↳ individual score




the test reliable
Is erough ?
Important decisions : less important decisions :
Group level :

-

Goods 90 .
-
Goed > .
80 -

Goods .
70
-

Sufficient > 80 90 .
-

.
-


Sufficient > .
80 -

.
70 -

Sufficient > 70 60 .
-

.




-
In sufficient c. 80 -
In sufficient c. 70 -
In sufficient c. 60




Percepties Corre spon
ding to Standard device ons :




>
2 =
% individuals with score c- 2513
316 =
% individuals with score c- 1 SD




Éne
P 50 % individuals with score <
score
average
=




384 =
% individuals with score et 1 SD
> 98 = % individuals with score c -125 D




( Youaangifte
mbar these threeand
, III soon
"
-
The distrance between P 16 )
c -
1 SD
is the difference between P 84 (c +1 SD ) and P 50 (0 SD ) =
34
-
The distrance between P2 (c -
2513 ) and 750 (0 SD ) = 48
,
50

is the difference between P 98 (c +2513 ) and P 50 (0 SD ) = 48




Minimum sample sizes for :


N
-



Important decisions ( irreversibele → >
300
-
Less important decisions → n 200 >


-


Group level → N 100 >

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 micolijn. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.21. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67474 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
$3.21
  • (0)
  Add to cart