PS101 Lecture Notes - Percentile Rank, Acetylcholine, Long-Term Memory
Document Summary
Raw scores are virtually meaningless on an exam unless you have some idea to the norms of a test. Unless you know how the scores distribute themselves. Graphing this shows central tendencies aha measurements of natural tendencies. Mode is the score that shows up most often. Median, is when you line up all the score and find the score in the midpoint. Variability: range is the difference between the top mark and the lowest mark. When a distribution is perfectly distributed, all scores fall along the mean. When you are in the 98% ile it means that you have scored better than that percent of people taking the test. Percentile rank indicated the percentage of people you scored better than. You can"t score higher than 99% because you can"t score higher than yourself. Know the major contributors and academic schools. Next topic: our brains have the power to destroy itself, regardless of its amazing ability.
