PSYC-1105EL Lecture Notes - Lecture 5: Fluid And Crystallized Intelligence, Face Validity, Well-Founded Relation
6 Dec 2016
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Nominal classification (this is a, this is b, this is c) Ordinal rank order (where they fit) Ratio ratio of difference (ex. height, an absolute value) Interval degree of difference (ex. temperature in celsius or farenheight) Mean () the average (add all the numbers together and divide by the # of samples) Mode number that appears the most often. Standard deviation a quantity calculated to indicate the extent of deviation for a group as a whole (variability/scatter) = mean x = each value n = number of samples. Variance informally measures how far a set of numbers are spread out from their mean (sd2) Range the difference between the lowest and the highest values. Standard error of the mean quantifies the precision of the mean (how far your sample mean is likely to be from the true population mean) In order to determine the z-score, first determine the mean.
