GAMSAT Scores And All The Calculation That Goes Into It

Calculating the GAMSAT scores involves a really tricky method. I mean one can hardly make out how the whole process has been framed or what is the central idea behind such calculations. Though GAMSAT believes in keeping it a secret, we still can manage to gather some information on how the GAMSAT scores are calculated. Since it is always interesting to know the key to tricky facts, so making you aware of the scoring process would be a nice try. Before anything else you should be knowing that the GAMSAT scores which remain valid for two consecutive years are scaled by ACER in order to use them to compare the changes in each year. One more interesting fact that you should be familiar with is that GAMSAT pays more weightage to the questions that have been least answered by the aspirants. So, to maintain a good score or to be on the safer side try not to miss on any of the questions.

The GAMSAT scores are undoubtedly counted on Item Response Theory (IRT) which is a highly preferred method. This process is used to calculate the score of each section on the same scale of interval and to estimate the ability of the test taker. The GAMSAT score is then rescaled on a scale of 0 – 10 for each of the three sections with the use of linear transformation technique.

GAMSAT section score = (estimate in logits + 5) * 10

Now, when talking in terms of using the IRT method, the items of each section is measured on two similar devices to check the level of correctness and then it is counted on the scale of interval by transforming these into logits. To make you understand things better, let us say that the GAMSAT scores involves normal distribution of data. It uses the mean and deviation technique for Section l scores and with this the scores of Section ll and lll are standardised. Further, the GAMSAT overall score is calculated on the weighted average of the three sections. The overall score is calculated with the help of the following formula:
Overall Score = (1 * Section ll + 2 * Section lll ) / 4

The Overall GAMSAT scores is basically calculated to several decimal places. To make the process easier for you, GAMSAT provides you with a chart that helps you calculate the approximate percentile based on your Overall score. Difference lies in setting GAMSAT scores for Section II that involves marking skills in written communication. GAMSAT Section II is marked by three raters of independent zone. Here, the raters use a scale of ten points. Now, if such a situation arises that the scores set by the raters have 5 or more differences in common, than a reference is made to the fourth ranker. Ultimately for each writing the three most nearest marks are summed up and put in for the GAMSAT scores.