Question

The following table gives the daily income of ten workers in a factory. Find the arithmetic mean.

$\begin{array}{ccccccccccc}\text{Workers}& A& B& C& D& E& F& G& H& I& J\\ \text{Daily Income (in Rs)}& 120& 150& 180& 200& 250& 300& 220& 350& 370& 260\end{array}$

Answer 1

$\begin{array}{cc}\text{Workers}& \text{Daily Income (in Rs)(X)}\\ A& 120\\ B& 150\\ C& 180\\ D& 200\\ E& 250\\ F& 300\\ G& 220\\ H& 350\\ I& 370\\ J& 260\\ \text{Total}& \sum X=2400\end{array}$

$N=10$

$\overline{X}=\frac{\sum X}{N}=\frac{2400}{10}=240$

Arithmetic Mean = Rs 240