Life sentences do not always mean life in prison without parole. People with 1 life sentence can get out well before their death if they are paroled. By giving 2 consecutive life sentences, the person begins serving the 2nd one as soon as paroled for the first, thereby making it closer to an actual life sentence.
For skewed distributions, it is quite common to have one tail of the distribution considerably longer or drawn out relative to the other tail. A skewed right distribution is one in which the tail is on the right side. A skewed left distribution is one in which the tail is on the left side. The above histogram is for a distribution that is skewed right. Skewed distributions bring a certain philosophical complexity to the very process of estimating a typical value for the distribution.
1 This situation is also called negative skewness. 2  When a distribution is skewed to the right (blue dotted curve), the tail on the curve's right-hand side is longer than the tail on the left-hand side, and the mean is greater than the mode.3  This situation is also called positive skewness.kewness can be quantified to define the extent to which a distribution differs from a normal distribution. In a normal distribution, the graph appears as a classical, symmetrical bell-shaped curve.. The mean, or average, and the mode, or maximum point on the curve, are equal.