Home
174 items | 82 visits
-
Cronbach Alpha--Educational Assessment course by Dr. Alex Yu
-
The theory behind it is that the observed score is equal to the true score plus the measurement error (Y = T + E). For example, I know 80% of the materials but my score is 85% because of lucky guessing.
In this case, my observed score is 85 while my true score is 80. The additional five points are due to the measurement error. A reliable test should minimize the measurement error so that the error is
not highly correlated with the true score. On the other hand, the relationship between true score and observed score should be strong. Cronbach Alpha examines this relationship.
-
-
Cronbach's Alpha - Dictionary Definition of Cronbach's Alpha
-
"Definition of Cronbach's Alpha"
From Econterms
Definition: Cronbach's alpha is a test for a model or survey's internal consistency. Called a 'scale reliability coefficient' sometimes.Cronbach's alpha assesses the reliability of a rating summarizing a group of test or survey answers which measure some underlying factor (e.g., some attribute of the test-taker). A score is computed from each test item and the overall rating, called a 'scale' is defined by the sum of these scores over all the test items. Then reliability a is defined to be the square of the correlation between the measured scale and the underlying factor the scale was supposed to measure.
-
-
Types of Reliability
-
Whenever you use humans as a part of your
measurement procedure, you have to worry about whether the results you get are reliable or
consistent. People are notorious for their inconsistency. We are easily distractible. We
get tired of doing repetitive tasks. We daydream. We misinterpret. -
We estimate test-retest reliability when we administer the same test to the
same sample on two different occasions. - 3 more annotations...
-
-
Cronbach's Alpha: A Tool for Assessing the Reliability of Scales
-
Cronbach's Alpha: A Tool for Assessing the Reliability of Scales
-
Cronbach's alpha is an index of reliability associated with the variation accounted for by the true score of the "underlying construct." Construct is the hypothetical variable that is being measured
-
-
Cronbach's alpha – Dictionary Definition of Cronbach's alpha | Encyclopedia.com: FREE Online Dictionary
-
Cronbach's alpha n. In psychometrics, a reliability coefficient indicating the degree of internal consistency of items within a test. Mathematically, it is the equivalent of the average of all possible split-half reliability coefficients of the test.
-
-
SUGI 26: An Introduction to Computing and Interpreting Cronbach Coefficient Alpha in SAS
-
An introduction to computing and interpreting Cronbach Coefficient Alpha in SA
-
-
Subscales: Educational Assessment course by Dr. Alex Yu
-
After collecting data, what should I do to analyze the
usability of the data? -
Overall Cronbach Coefficient Alpha
-
-
The core values of professionalism (the social contract between professional and society) are scientific expertise and altruism. - Google Search
-
A Vision for Canadian Medical Schools Social Accountability
-
the social contract between a professional and. society, with its core values of scientific. expertise and altruism. In order to meet this ..
- 1 more annotations...
-
-
Taking the Honor Pledge
-
Signing the honor code in front of classmates was a far
different experience from signing it at home along with meal plan
requests, housing surveys and other admission-related documents,
said Allison Becker, a first-year student from Hingham, Mass. -
As an additional reminder, first-year students also received
commemorative pens at the signing ceremony emblazoned with the
words "On My Honor" and "Class of 2004."
-
-
Office of Student Conduct
-
The
University of Maryland Honor Pledge was initiated by students.
Hundreds of students signed a campus-wide version of the Pledge
before it was officially adopted by the University Senate. The
Pledge language approved by the Senate was jointly sponsored by
the Student Honor Council and the President's Student Advisory
Council. It was also endorsed by majority vote of the Student
Government Association.
-
List Comments
(0)
List Info
Sponsored Links
Ads by Google