How to draw control charts ? SPC I 7 QC TOOLS IN HINDI

[@balkarsingh4847]

Very nice and helpful

[@Shariq1234561]

Ye 3 se multiply kia hai, 3 kahan se aya ??

[@jrworld4178]

How u got the range?

[@vikasgawhade5094]

Range kha se lau

[@chetansinha1991]

Sigma ka formula kya lagya yaha pe

[@AQEtrainings]

root mean square method,