Hi everyone,(adsbygoogle = window.adsbygoogle || []).push({});

I'm using the following formula to calculate skewness

[tex] g_1 = \frac{m_3}{m_2^{3/2}}

= \frac{\tfrac{1}{n} \sum_{i=1}^n (x_i-\overline{x})^3}{\left(\tfrac{1}{n} \sum_{i=1}^n (x_i-\overline{x})^2\right)^{3/2}}\ , [/tex]

However, when I try excel on to calculate skewness I get a different results. For example this set:

1

1

1

1

1

1

1

9

9

I get: 1.33630621

Excel gets: 1.619847741

Is excel using a different formula, or am I doing something wrong?

Ted.

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# Help with Sample Skewness

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