3.22 Quadratic Mean
\(QM=\sqrt{\frac{x_1^2+x_2^2+...+x_n^2}{n}}=\sqrt{\frac{\sum x_i^2}{n}}\)
- Also known as Root mean square
- More at: https://en.wikipedia.org/wiki/Root_mean_square#Uses
- For grouped data?
\(QM=\sqrt{\frac{x_1^2+x_2^2+...+x_n^2}{n}}=\sqrt{\frac{\sum x_i^2}{n}}\)
- Also known as Root mean square
- More at: https://en.wikipedia.org/wiki/Root_mean_square#Uses
- For grouped data?