The distribution is said to be left-skewed, left-tailed, or skewed to the left, despite the fact that the curve itself appears to be skewed or leaning to the right left instead refers to the left tail being drawn out and, often, the mean being skewed to the left of a typical center of the data. negative skew: The left tail is longer the mass of the distribution is concentrated on the right of the figure.These tapering sides are called tails, and they provide a visual means to determine which of the two kinds of skewness a distribution has: Within each graph, the values on the right side of the distribution taper differently from the values on the left side. 5.4 Groeneveld and Meeden's coefficientĬonsider the two distributions in the figure just below.5.2 Pearson's second skewness coefficient (median skewness).5.1 Pearson's first skewness coefficient (mode skewness).3.1 Fisher's moment coefficient of skewness.
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