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Unformatted text preview: -the height of the dot at each midpoint represents the frequency of the class Ogive:-aka cumulative frequency graph-horizontal scale shows class boundaries-vertical axis shows cumulative frequency or cumulative relative frequency-height of each dot represents accumulated frequency at that point -shows the rate of change -ends in air Central Tendency: averages, mean, median, mode Variability: standard deviation, coefficient of variance Range = High Low Position : deciles, quartiles Coefficient of Variation : Mean/Standard deviation x 100%; more variable = higher number Percentile = a measurement of position; what proportion of values are equal to or below a certain position Chebyshevs Theorem : 1- (1/k2) Outlier : - An extremely high or low data value when compared to the rest; any score that falls outside the range from Q1 1.5IQR to Q3 + 1.5IQR - IQR = Q3 Q1...
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- Spring '08