Results 1 to 7 of 7
  1. #1
    Lounger
    Join Date
    Oct 2002
    Posts
    48
    Thanks
    0
    Thanked 0 Times in 0 Posts

    How to state an improvement in errors (2000)

    Although this isn't actually an Access question, it's one that I have while using Access. I realized that I'm not sure how to state an improvement in an error rate. For example:

    First, I produce 100 units, with 25 errors for an Error Rate of 25%.

    Later, I produce 100 units, with 10 errors, for an Error Rate of 10%.

    Did I improve my errors by 15%, or by 60%?

    Units 100 100
    Errors 25 10
    Error Rate 25% 10%

    Begin Error Rate 25%
    End Error Rate 10%
    Improvement 15%

    Begin errors 25
    Ending errors 10
    Improvement in errors 15
    Improvement 60%

    Thanks for any perspective on this.

    Howard

  2. #2
    Lounger
    Join Date
    Oct 2002
    Posts
    48
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    Thanks for your input Cecilia. I guess that's why they say that statistics can be misleading if the one providing them wants them to be.

    Howard

  3. #3
    3 Star Lounger
    Join Date
    Jun 2001
    Location
    Maidstone, Kent, England
    Posts
    398
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    I think that if your errors had gone from 10 to 20 the management would insist that they had doubled (100%) not just had a 10% increase! so you are only using the same maths as them!! <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

    peter

  4. #4
    3 Star Lounger
    Join Date
    Jan 2001
    Location
    San Francisco, California, USA
    Posts
    358
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    Hee hee, Peter!

    That's exactly how my management sees it!

    (Call me poor gov't employee)

  5. #5
    3 Star Lounger
    Join Date
    Jan 2001
    Location
    San Francisco, California, USA
    Posts
    358
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    Isn't the accepted formula: Last - First / Last = rate of change?

    That would mean, in your example, 25-10/25 is a 60% improvement in error rate.

    But you did improve your errors/performance (rather than your rate of errors) by 15%.

    I'm not an expert in statistics, but this is how I'd interpret it.

  6. #6
    4 Star Lounger
    Join Date
    Feb 2001
    Location
    Richland, Washington, USA
    Posts
    407
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    For 2

  7. #7
    Lounger
    Join Date
    Oct 2002
    Posts
    48
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: How to state an improvement in errors (2000)

    Thanks all for your input.
    Howard

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •