1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

R Chart with probability limits

  1. Oct 17, 2008 #1
    Am all confused...W is the relative range right?
    Where do we get the value of W from - which table....... proff got
    W0.999 = 5.483754 & W 0.001 = 0.367392
    (Que: Suppose we want to use probability limits with α = 0.002...sample size is 5)
    Please help & explain.
     
  2. jcsd
  3. Oct 17, 2008 #2
    I have no idea what you are talking about. Please try and formulate your question in a more understandable way.
     
  4. Oct 17, 2008 #3
    Suppose we want to use probability limits with α = 0.002. What are the control limits for theX and R charts?

    Sample size is 5....All I want is how do we calculate R limits

    Solution : W 1 - α/2 = W0.999 = 5.483754

    Just want to know what table he has referred to get this answer?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: R Chart with probability limits
  1. Quality Control Charts (Replies: 0)

Loading...