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When you collect data from a process, it will have variation! Is it sufficient to just report the average value? If not, how should we report this variation?
It is important to classify the data that you collect correctly to perform statistical analysis. How do you determine if the data you have collected is continuous or discrete...
5 Why Analysis seems simple on the surface - just ask why 5 times but applying it to real-world problems could sometimes be tricky...
When do you use the mean value and when do you use the median value to report the central location of the data you have measured?