PSYCH 240 Lecture Notes - Lecture 12: Percentile Rank, Standard Deviation, Percentile
Document Summary
Percentile rank a percentage that describes your rank among those also being evaluated. I. e. if your percentile rank on a test is 90, then your score is higher than 90% of the class. It is impossible to get 100% percentile rank because you cannot get higher than everyone in the class, including yourself. Add all the numbers up and divide by number of terms. Median the middle point of all the terms such that half is above the number and half is below the number (50th percentile). Arrange the number from highest to lowest or vice versa and find the number in the middle. Mole the number that occurs the most. Count to see which number appears the most. Range the range of the scores is the difference between the highest number and the lowest number. The range of gpa score is from 0. 0 to 4. 0. Standard deviation a measurement of how far scores differ/deviate from the mean.
