PSYC 210 Chapter Notes -Central Tendency, Unimodality, Squared Deviations From The Mean

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 210
• Professor: Cathy Mc Farland

Document Summary

Variable characteristic that can have different values. Score particular person"s value on a variable. Value possible number or category that a score can have. Central tendency typical or most representative value of a group of scores. There are three measures of central tendancy: mean, mode, median. Mean arithmetic average of a group of scores; sum of scores divided by the # of scores. N = the number of scores in the distribution. Steps for getting the mean: add up all the scores (figure out x, divide this sum by the number of scores (divide x by n) Mode value with the greatest frequency in a distribution; the value that is most reoccurring. In a perfectly symmetrical unimodal distribution, the mode is the same as the mean. The mode isn"t a good way of describing the central tendency of the scores because it doesn"t reflect many aspects of the distribution.