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Unformatted text preview: 100%. Interquartile range: values between 25% and 75%. Types of Graphical Distributions Histogram Similar to bar chart Bins: categories that values may fall in. Scatter plot Instead of bars, dots show frequency falling in each category Scatter plot with smoothed lines Give us a frequency curve Other measures of dispersal Mean deviation Average distance of observations from mean. Standard Deviation and Variance Measures of dispersion around the mean. Bell shaped Unimodal: one peak Symmetrically falls off on either side of peak Mean, median, and mode in same place! Skewness How asymmetrical is the distribution? Positive skew 3 Negative skew Kurtosis Measure of peakedness...
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