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An observation with a z-score of 0.4 is greater than the mean. A Pareto chart is a bar chart where the categories are ordered alphabetically. If a data set is skewed to the left then | M – Q1| > |Q3 – M| where M is the median. Histograms are used for graphically displaying quantitative variables. The IQR (interquartile range) can never be 0. ................
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