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diff --git a/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-4.tex b/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-4.tex new file mode 100644 index 00000000000..47e66f15dd1 --- /dev/null +++ b/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-4.tex @@ -0,0 +1,11 @@ +\documentclass{article} +\usepackage{german} +\begin{document} +Each of the measurements $x_1 < x_2 < \cdots < x_r$ occures +$p_1$-, $p_2$-$,\ldots,p_r$ times. The mean value and standard deviation +are then +\[ x = \frac{1}{n}\sum_{i=1}^r p_i x_i,\qquad s= \sqrt{\frac{1}{n}\sum_{i=1}^r + p_i(x_i - x)^2} \] +where $ n = p_1 + p_2 +\cdots+p_r $. +\end{document} + |