The results for a certification exam were revealed in percentage and percentile. The results for one of the attendees was: 75%, 90th percentile.
What is the value in sharing the percentile score?
The results for a certification exam were revealed in percentage and percentile. The results for one of the attendees was: 75%, 90th percentile.
What is the value in sharing the percentile score?
The percentile score provides additional insight by indicating how the attendee performed in comparison to other attendees. Unlike the raw percentage, which only shows the individual's performance in terms of correct answers, the percentile shows the relative position among all test-takers, thereby giving a clearer picture of one's standing.
C - CBDA guide page 122: Measures of central tendency/location: This is the most natural way to summarize data by saying where the data is most concentrated. Mean (average) is the sum of values over the number of items. The percentile score (90th percentile) ranks the attendee's performance relative to others who took the exam. This provides additional context beyond just the raw percentage score, indicating how well the attendee performed compared to their peers. This ranking helps in understanding where the attendee stands in relation to the overall group of exam takers.