Reliability refers to the consistency of a measure and whether a test would produce the same results over multiple administrations. There are several ways to estimate reliability, including test-retest reliability, parallel forms reliability, and internal consistency reliability. Reliability can be affected by factors related to the test takers themselves as well as the testing environment and administration. To improve reliability, tests should provide detailed scoring keys, avoid ambiguous items, and use objective questions.

2. Name
Amina Batool
RollNo
Bsf2002818
Topic
Reliability
University of Education Lahore Faisalabad Campus

3. What is Reliability?
 Reliability refers to the consistency
of a measure.A test is considered reliable when we
get the same result repeatedly. It is impossible to
calculate reliability exactly,but it can be estimated
in a number of a different ways.

4.  Test Takers: This Sources of errors takes place
into consideration what is happening within
the individual like huger, headache, emotional
upset and anxiety growth.
 Test Administration: It can be cause by
lighting of examination room, room
temperature, noise, sitting arrangement,
instruction,attitude of test examiner.

5.  Test Retest Reliability: The test is administered
twice at two different points in time .it is best
use for things that are stable over time.
 Inter rater Reliability: assess by having two or
more independent judges score the test. The
score has been compared to determine the
consistency of the raters estimate.

6.  Parallel forms Reliability: Comparing two
different test that were created using the same
content.
 Internal consistency Reliability: Use to judge
the consistency of results across items on the
same test.
 Split half: give parallel form of test with in
crease time interval between forms using
pearson R formula.

7.  Provide a detailed scoring key.
 Try to avoid ambiguous items.
 Try to use objective tests.