# How calculate P value for Linearity and Bias using Excel

M

#### mode62930

Hi everybody,

I want to create the same report than minitab for linearity and bias study. As showed in picture attached.You could also find my excel file.

As you can see, I am blocked with calculation of P-value for biais and linearity.

Simon

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M

#### mode62930

Thank you Reynald, but unfortunately there is no P-value calculate in MSA 4rd edition or I didn't see it.
Is somebody know how to calculate these p-value for Biais and linearity ?

#### Statistical Steven

##### Statistician
Staff member
Super Moderator
Hi everybody,

I want to create the same report than minitab for linearity and bias study. As showed in picture attached.You could also find my excel file.

As you can see, I am blocked with calculation of P-value for biais and linearity.

Simon
The linearity part is just using the regression analysis found in the Data Analysis Add-in

The bias part is just a one-sample t-test against the hypothesis that bias = 0.

Can you do this Excel?

M

#### mode62930

Thank you so much Reynald and Statistical Seven.

I succed for linearity, but I am steel struggling with calculation of 4td column in the example you post Reynald. You could find attached the excel file where I re-do the example.

How can I calculate the 4td column (column I in my excel)

After I will get this value, I will calculate the p value with:
= Tdist( t , Count(count sample of each reference) -1)
Am I right ?

Thank you for your help again.

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#### reynald

##### Quite Involved in Discussions
I did try to replicate the sample and was successful except for the average's mean std.
Let's wait for others help, meanwhile this might keep you going.

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#### Miner

##### Forum Moderator
Staff member
Try using the pooled standard deviation for the average row.

M

#### mode62930

Woow thank you guys !

It is progressing a lot ! I compared Minitab and Excel sheet I have slight difference on P-value. Do you know why ?

Thanks again.

#### Attachments

• 13.9 KB Views: 209
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