PSYC 1010 Lecture Notes - Lecture 3: Standard Deviation, Descriptive Statistics, Central Tendency

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Myriam Mongrain

Document Summary

Median- divides it by : variability how much scores spread out from the mean. Standard deviation (s. d) - measures the average spread of scores (deviation) from the mean. It takes into account all scores in the distribution. The greater the variability, or spread of scores, the higher the standard deviation. (know which one has the higher sd: normal distribution- hypothetical distribution (if i was to collect data, this is how it would look). Important in psychology for 2 reasons: most psychology variables are normally distributed. It provides a precise way of determining how people ii. compare to one another. Known as the bell curve (mean, mode & median are all the same value). Personality) are based on this if you have a large enough sample size: inferential statistics: Comparing iqs of people that eat brain os & no name . If yes, the results are cereal for a year.