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Crypto fear and greed index

Mean and standard deviation online calculator



You can see a sample solution below. Enter your data to get the solution for your question

$$ \displaylines{---} $$
$$ \displaylines{Mean = \frac{\sum_{i=1}^{n}x_{i}}{n} \\ \\ \,=\frac{2+4+6+7+8}{5} \\ \\ \,=\frac{27}{5} \\ \\Mean = 5.4 } $$
$$ x $$
$$ \bar{x} $$
$$ x-\bar{x} $$
$$ [x-\bar{x}]^{2} $$
$$ 2 $$
$$ 5.4 $$
$$ -3.4 $$
$$ 11.56 $$
$$ 4 $$
$$ 5.4 $$
$$ -1.4 $$
$$ 1.96 $$
$$ 6 $$
$$ 5.4 $$
$$ 0.6 $$
$$ 0.36 $$
$$ 7 $$
$$ 5.4 $$
$$ 1.6 $$
$$ 2.56 $$
$$ 8 $$
$$ 5.4 $$
$$ 2.6 $$
$$ 6.76 $$
$$ Total $$
$$ $$
$$ $$
$$ 23.2 $$
$$ \displaylines{} $$
$$ \displaylines{Sample \;variance = (\sigma)^{2} = \frac{\sum_{i=0}^{n}(x_{i}-\bar{x})^{2}}{n-1} \\ \\ \Rightarrow \frac{23.2}{4} \\ \\ \Rightarrow 5.8 \\ \\ \sigma = \sqrt{variance} \\ \\ \Rightarrow \mathbf{\color{Red}{2.408319}} } $$