PSY201H1 Lecture 3: Mean, Median, Mode
Document Summary
Interval/ratio: distance btwn scores equal: amount of the total for each individual when we divide total equally btwn everyone in sample, conceptually can be defined as balance point of distr. Scores on one side equal distance from. Balanced on fulcrum /pivot-point; be mean as scores from other side wary of when the mean actually doesn"t appear as actual score in sample. Works because distance from the mean is equal on both sides: ex. Two values below mean (m = 5), 2 is 3 units from mean = a total distance of 6 from mean. Two other values that above mean; 6 is 1 unit from mean, 10 is 5 units from mean = a total distance of 6 from the mean: ex. {2, 3, 3, 4, 4, 4, 5, 5, 6}, m=4: ex. {1, 1, 2, 2, 2, 3, 3, 6, 7}, m=3.
