PSY201H5 Lecture Notes - Lecture 3: Frequency Distribution, Percentile, Percentile Rank
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Percentile rank and percentiles: a percentile rank of a score. = percentage of observations in the distribution w/ scores at or below that value. Your percentile rank is 50% if you scored an 80 on a test + 50% of people scored. Your percentile rank is 50% if you scored a 40 on a test + 50% of people scored. = a score identified as a percentile rank. If percentile rank = 60% then percentile = 60th percentile. If percentile rank = 50% then percentile = 50th percentile: cumulative frequency distribution. Can ask on a test how many people were surveyed just by looking at cf*: cumulative percentage (c%) C% refers to the upper limit: remember real limits, interpolation. A way of estimating intermediate values in the distribution. Suppose you"re scheduled to work for 8 hrs and will receive for your work. How much will you get paid if you leave after.
