Quasi Experimental Design | Definition, Example, Types, Pros & Cons

[@daluzhaykacastro1450]

How to calculate the score if the researcher will using instructional materials during post-test and pretest

[@mimtechnovate]

Calculating a score based on pretest and post-test results can involve various methods depending on the specifics of the instructional materials and the nature of the assessment. One common method is to calculate the difference or percentage change between the pretest and post-test scores. Here's a simple formula for calculating the score difference: Score Difference = Post-test score - Pretest score And to calculate the percentage change: Percentage Change = ((Post-test score - Pretest score) / Pretest score) * 100 Let's say, for example, a student scores 60 on the pretest and 80 on the post-test. Using the formulas: Score Difference = 80 - 60 = 20 Percentage Change = ((80 - 60) / 60) * 100 ≈ 33.33% This would indicate a score increase of 20 points or a 33.33% improvement from the pretest to the post-test. However, if you have a more complex scoring system or specific criteria for assessing the effectiveness of instructional materials, the calculation method might differ. For instance, you might consider a weighted scoring system or analyze the results based on different sections/topics covered in the instructional materials. It's important to establish clear evaluation criteria before conducting the pretest and post-test to ensure that the assessment accurately reflects the impact of the instructional materials.