# Thesis on reliability analysis,

Take the following example: Since there are many ways of thinking about intelligence e. As such, we can say that the measurement procedure is reliable. In the split half type of reliability analysis, the random assignment of the subjects is assumed. So what do we mean when we say that a measurement procedure is constant or stable?

These questionnaire items or interview questions are part of the measurement procedure. Provided that the error component within a measurement procedure is relatively small, the scores that are attained over a number of measurements will be relatively consistent; that is, there will be small differences in the scores between measurements.

The error reflects conditions that result in the score that we are measuring not reflecting the true score, but a variation on the actual score e.

In order to overcome this problem, Cronbach introduced a measure that is common in reliability analysis. Therefore, the score measured e. However, it should be noted by the researcher that the test retest type of reliability analysis involves the correlated data between the observations which do not pose a statistical problem in assessing the reliability.

The second version is the standardized version. There are certain times and situations where it can be useful.

When we think about the reliability of these variables, we want to know how stable or constant they are. This method splits the data into two parts. How do I use these tests of reliability?

There are certain assumptions that are assumed.

This measurement procedure should provide an accurate representation of the construct it is measuring if it is to be considered valid. Contact Statistics Solutions today for a free minute consultation.

It is assumed that this happens randomly, with the error averaging zero over time; that is, the increases or decreases in error over a number of measurements even themselves out so that we end up with the true score e. In quantitative research, the measurement procedure consists of variables; whether a single variable or a number of variables that may make up a construct [see the section on Constructs in quantitative research ].

The normal version of alpha is applicable when the items on a scale are summed to produce a single score for that scale.

It is assumed that the errors are uncorrelated to each other. For example, if we want to measure the construct, intelligence, we need to have a measurement procedure that accurately measures a person's intelligence.

Reliability Analysis Posted June 26, Reliability analysis refers to the fact that a scale should consistently reflect the construct it is measuring. According to Klinethe acceptable value of alpha in reliability analysis is 0.

When we examine a construct in a study, we choose one of a number of possible ways to measure that construct [see the section on Constructs in quantitative researchif you are unsure what constructs are, or the difference between constructs and variables]. This measure is loosely equivalent to the splitting of the data in two halves in every possible manner and further computing the correlation coefficient for each split.

There are basically two versions of alpha in reliability analysis. Independence within the observations is assumed. This assumption, that the variable you are measuring is stable or constant, is central to the concept of Dating peer pressure. There is a Thesis on reliability analysis technique called the split half reliability.

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