Standard Deviation
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11 Terms
the smaller the standard deviation …
the thinner the distribution
no variation means that …
all the values are the same
the most commonly used measure of variation that shows the variation of the need
standard deviation
measures relative variation in percentages that is used to compare the variability of data measured in different units
coefficient of variation
a data value that has a z-score less than -3.0 or greater than +3.0
outlier
the extent to which data values are not symmetrical
skewness
if the mean is larger= … , if the mean is smaller=…
larger mean= right, smaller mean= left
measures the peakedness of the curve of the distribution
kurtosis
sharp peak and larger kurtosis
leptokurtic
bell shaped, kurtosis=0
mesokurtic
flat, kurtosis is less
platykurtic
Note 
Flashcards (35)