PEDS109 Lecture Notes - Percentile Rank, Central Tendency
28 Apr 2013
School
Department
Course
Professor
Document Summary
Sept 12 norm & criterion referenced standards. To make evaluative statements, we need a reference perspective. Norm referenced standards: score is compared against the scores of other people, the characteristics of the reference group upon which the norm was established must be known! The more players, the more expensive an event will be: a disadvantage is that the athletes may all miss the mark, percentiles represent how many people got what, get2 numbers, get the range. Then find the bandwidth of the other 2 numbers. What is the percentile rank for a verbal ability using a score of 410. There will be a question on the midterm about interpolation! The absolute score is the same, the relative score is different. If you don"t have all the raw scores of the subjects of the variable of interest, you cannot compute the mathematical average. If you cannot get the mathematical average, you cannot get the mean.
