# Gage R&R Excel .xls Spreadsheet Problem

M

#### mgoward

I ahve a gage R & R spreadsheet (attached) which I have verified using Ford's data. The result is incorrect but I cannot find where the error is in the calculations.

Can anyone help

Thanks

Mike

#### Attachments

• R & R Study.xls
156.5 KB · Views: 720
D

#### D.Scott

Re: Gage R & R Spreadsheet Problem

Mike,

I looked at the R&R but I think I could use a little help. What do you mean you verified the R&R? Why do you say it is incorrect? Do you mean you get different results to the same data on a Ford R&R?

Rather than checking every cell, it may be easier if you could let us know what was incorrect about the results. I may be missing something but I have to admit I didn't spend too long looking at it. Nothing jumped out at me though.

Dave

5

#### 56flh

Re: Gage R & R Spreadsheet Problem

Only had a couple of seconds, but checking the averages in the 1st sample, appraiser A, I get different results adding with a calculator.

M

#### mgoward

Re: Gage R & R Spreadsheet Problem

Mike,

I looked at the R&R but I think I could use a little help. What do you mean you verified the R&R? Why do you say it is incorrect? Do you mean you get different results to the same data on a Ford R&R?

Rather than checking every cell, it may be easier if you could let us know what was incorrect about the results. I may be missing something but I have to admit I didn't spend too long looking at it. Nothing jumped out at me though.

Dave

Appologies Dave

I have used the data supplied by Ford (attached) to verify I get the same result. Ford's data states for 'Gauge R&R as a percent of study variation using the Average and Range Method (See Measurement System Analysis Third Edition)' I should obtain a result of 10.28%.
The result I obtain in the spreadsheet is 8.24%

Thanks again

Mike

#### Attachments

• Measurement_System_Software_Callibration_Tables.xls
1.4 MB · Views: 559
M

#### martin elliott

Re: Gage R & R Spreadsheet Problem

Appologies Dave

I have used the data supplied by Ford (attached) to verify I get the same result. Ford's data states for 'Gauge R&R as a percent of study variation using the Average and Range Method (See Measurement System Analysis Third Edition)' I should obtain a result of 10.28%.
The result I obtain in the spreadsheet is 8.24%

Thanks again

Mike

Mike

Fords 10.28 is by Process variation (GR&R), the value by Tolerance (P/T Ratio) is 8.27 which is what your sheet is reporting.

M

#### mgoward

Re: Gage R & R Spreadsheet Problem

Thanks Martin

Don't know how I missed that one, been looking at the formulas to long I think.

Mike

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