PSYC 21621 Study Guide - Final Guide: Standard Deviation, Sample Size Determination, Frequency Distribution

• School: Kent State University
• Department: Psychology
• Course: PSYC 21621
• Professor: Jaruda

Document Summary

Knowing the mean and standard deviation a a. This is the raw scores are of z-scores a a (z): Z-scores can we: use a z-score, but is a z-score. 0 and ansdofl mean scores from a distribution scores na and a a an ke different location of every score n distribution entire a compa rable. Example: test scores, 18; z-score ot:i:-, 82; rscore ",h:r" it is 2 sds above the mean, 56; z-score of -1. 5 it is 3 sds above the mean. This tells rne it is -1. 5 sds below the rnean. 6 r x: raw score r [viu: mean r sigma: standard deviation. Step l: calculate the deviation score: need to compare the score to the mean, o*:"""#;:,fiil"ii:j",v to do this. Step 2: convert to standard deviations: lnstead of how many points from the mean, you want to look at how many standard deviations from the mean, divide the deviation score by the standard deviation.