Mathematics, 03.03.2020 04:22 markipler01
Suppose that we have collected a sample of 8 observations with values 12.6, 12.9, 13.4, 12.3, 13.6, 13.5, 12.6, and 13.1. What are the observed sample mean, observed sample variance, and observed sample standard deviation
Answers: 1
![s^{2}=\frac{1}{n-1}\sum (x-\bar x)^{2} \\=\frac{1}{8-1}[(12.6-13)^{2}+(12.9-13)^{2}+(13.4-13)^{2}+...+(13.1-13)^{2}] \\=\frac{1}{7}\times1.6\\=0.2286](/tpl/images/0531/7847/b6dc4.png)
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Suppose that we have collected a sample of 8 observations with values 12.6, 12.9, 13.4, 12.3, 13.6,...
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