สิปาง ดิเรกคุณากรSipang Dirakkhunakon2567-03-202024-03-202554-https://dspace.spu.ac.th/handle/123456789/9700The media efficiency calculating method (E1/E2) is equal to 70/70 and 70 (E1), the first refers to the average of the entire group. Or a percentage of the average of the test after learning of the 70 (E2), the latter refers to the achievement of all students and percentage of students who can do all the tests pass. Measure the development of students or growth score / gain scores. Will be measured by the test scores. Which were measured 2 times was measured before and after the study to measure. So calculate the difference between the scores before and after of test. The score is an indicator of changes to improve the learning of students. And study analysis, along with new concepts of basic statistics by Principles and interpretation of statistical data.thThe media efficiency calculating methodE1/E2growth scoregain scoresOther