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procedures used to analyze data after an experiment is completed in order to determine whether the IV had a significant effect
a scale in which the events are assigned to categories (i.e. left-handed vs right-handed)
a scale that permits events to be rank ordered without necessarily having equal distance between points
a scale that permits rank ordering with the assumption of equal intervals between adjacent events (no true zero)
a scale of measurement that permits rank ordering, equal distance, and a true zero point
graphical representation of the percentage allocated to each alternative as a slice of a circular pie
A graph of vertical bars representing the frequency distribution of a set of data, the bars touch, generally intervals
a graph in which the frequency of each category of a qualitative variable is represented as a vertical column, bars do not touch.
type of line graph that shows frequency distributions; made by placing a dot on each bar of a histogram, connecting the dots, and removing the bars
a measure of variability that is computed by subtracting the smallest score from the largest score
a single number that represents the total amount of variation in a distribution, also the square of the standard deviation
a symmetrical, bell-shaped distribution having half the scores above the mean and half the scores below the mean (bell curve)
the claim that the relationship proposed between two variables does not exist, or that the difference in data was due to chance (not the operation of the IV)
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