Internal consistency--The application and appropriateness of internal consistency would be viewed as reliability. Internal consistency describes the continuous results provided in any given test. It guarantees that a range of items measure the singular method giving consistent scores. The appropriateness would be to use the re-test method in which the same test is given to be able to compare whether the internal consistency has done its job (Cohen & Swerdlik, 2010). For example a test that could be given is the proficiency test which provides three different parts to the test, but if a person does not pass the test the same test is given again.
Strengths—The strength of internal consistency is its ability to provide continuously reliable measurement. Sometimes it may provide an internal consistency estimate in which the ability of different items continuously creating and ensuring the results is measureable. Internal consistency tracks down the most reliable contribution to measure the effectiveness of the context.
Weaknesses—The weakness in the internal consistency when used with some test it only become affective when the use of the test consist of the same items, and they must be items of the same difficulty and length. Test of reliability have been known to work best when the whole application items are used verses the shorter application items.
Split-half—Is obtained by correlating two pairs of scores obtained form equivalent halves of a single test administered once. It is a useful measure of reliability when it is impractical or undesirable to assess reliability with two tests or to administer a test twice (because of factors such as time or expense). When it comes to calculating split-half reliability coefficients, there’s more than one way to split a test, but there are some ways you should never split a test. Simply dividing the test in the middle is not recommended because it’s