[SPC Study 1] Which chart is best for my data? X-bar, R, S, Raw(I), MA, MR, EWMA, or np, p, c, u chart?
This post will compare; #X-bar chart #R(Range) chart #S (sigma) chart, #I(raw) chart #MA(moving average) chart #MR(moving range) chart #EWMA chart and.... #np chart #p chart #c chart #u chart Hello :D I recently have started working as a Quality Control Engineer at a pretty massive manufacturing establishment, and have come across a moment where I wanted to decide: "WHICH TYPE OF SPC CHART IS WORTH MONOTORING FOR EACH OF MY PRODUCTION PARAMETERS?" and this is how I came to my conclusions! 1. Decision Branch. Here is meaning explained with examples for each term mentioned in the Decision Branch #Continuous data: (subgrouping optional) weight, length, voltage of each product #Continuous data: (No subgrouping) speed of conveyor belt, temperature of tank, wattage per hour of equipment #Discrete data: (Defects) failed due to; surface breakage, contamination, low resistance #Discrete data: (Defectives) failed product due to: how many-ever defects on one of product Now that I got ...