cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Check out the JMP® Marketplace featured Capability Explorer add-in
Choose Language Hide Translation Bar

t Test

Screenshot 2024-03-11 at 9.18.23 PM.png

 why is there no t Test option?

2 REPLIES 2
txnelson
Super User

Re: t Test

Welcome to the Community.

It appears that you only have a single measurement for each of the groupings specified in Column 1.  The various Means tests available under the Compare Means require raw data as input.

Jim
Byron_JMP
Staff

Re: t Test

just looking at your figure...

 

It is very likely that you have Cleaved vs. something else, and for those two categories you have 6 replicate measurements for each (treated 1-6).

Your data should be formatted with at least three columns.  Column 1 will have Cleaved and the other category, Column 2 will have the replicate measurements (treated 1-6),  and Column 3 will have your measurement data.

Right now you have a column with lables like, "Cleaved, Treated 1". This column has two pieces of information in it that need to be split.  

Use Cols>Utilities>Text to Columns, and specify a comma as the delimiter.  This will give you two columns that you need.

 

 

With the data in this format, put Data in the Y role, and Column 1 in the X role.  Then you will see the t-test option.

 

-The t-test options only show up in the red triangle menu when there are only two groups of data.

-ANOVA is an acronym for Analysis of Variance. When there is only one measurement per group, there is no variance.

 

I hope this helps

 

 

 

JMP Systems Engineer, Health and Life Sciences (Pharma)