29. Five mark exercise problem II

Find the variance and standard deviation of the wages of \(9\) workers given below: \(₹ 310\), \(₹ 290\), \(₹ 320\), \(₹ 280\), \(₹ 300\), \(₹ 290\), \(₹ 320\), \(₹ 310\), \(₹ 280\).

 

Answer:

 

Variance \(=\)

 

Standard deviation \(=\)