PEDS109 Lecture Notes - Percentile Rank, Cumulative Frequency Analysis, Percentile

• School: University of Alberta
• Department: Physical Education and Sport
• Course: PEDS109
• Professor: John Dunn

Document Summary

On an ogive the y axis will represent cumulative frequency. Points are located at the upper limits of each class interval. If you scored in the 10th percentile, approximately 10% scored at or below you. If you are at the 90th percentile, approximately 90% of the people scored at or below you. Percentiles and percentile ranks: the percentile rank of a particular score is defined as the percentage of individuals in the distribution with scores equal to or less than the particular value. Cumulative percentiles and cumulate percentages tell us the same thing most of the time. Calculating the score associated with the (pth) percentile when you have all the raw scores. Step 1. ) to compute percentile ranks, arrange data in ascending order. Step 2. ) compute an index (i) i = (p / 100) n. N is the number of scores in our data set.