Shingles is caused by the varicella zoster virus (VZV), the same virus that causes chickenpox. After a person recovers from chickenpox, the virus stays dormant (inactive) in the body. For reasons that are not fully known, the virus can reactivate years later, causing shingles. Shingles is not caused by the same virus that causes genital herpes, a sexually transmitted disease.
And different software packages use all different sorts of formulas. Be careful to use the formula from your book when doing your homework! Additionally, the box-and-whisker plot may include a cross or an X marking the mean value of the data, in addition to the line inside the box that marks the median. The difference between the X and the median line can then be used as a measure of skew. Please don't ask me to explain skew.
Concept: Box-and-Whisker Plots. A box-and-whisker plot is a visual representation of how the data is spread out and how much variation there is. The main advantage of the box-and-whisker plot is that it is not cluttered by showing all the data values. It highlights only a few important features of the data.Therefore, the box-and-whisker plot makes it easier to focus attention on the median, extremes, and quartiles and comparisons among them. Another advantage of the box-and-whisker plot is that it does not become more complicated with more data values.A disadvantage of the box-and-whisker plot occurs when there are only a few data values. Constructing a box-and-whisker plot:nother advantage of the box-and-whisker plot is that it does not become more complicated with more data values. A disadvantage of the box-and-whisker plot occurs when there are only a few data values. Constructing a box-and-whisker plot: