t-test with multiple samples

I'm having problems with writing a formula to do t-test (paired two-tailed) on numbers in Excel columns A and B corresponding to a column of different samples (C) (see below). I want the output to report the p-values in one column corresponding to H1,H2, and H3. Thanks for any help.

A B C(samples)
0 0 H1
283 5 H1
16 0 H1
71 5 H1
34 1 H1
52 2 H1
93 17 H1
39 2 H2
10 0 H2
35 2 H2
59 1 H2
20 6 H2
2 34 H3
4 31 H3
3 21 H3
8 17 H3

I'm assuming you want to use the TTEST formula, and have the results output somewhere...however, the formula requires 4 inputs, and without a sample of what you have, and expect to see, it is difficult to give you an answer, an example workbook would help immensely !

ok, so here's my excel spreadsheet of the samples. i want to return the p-values in column F. I did the t-test one sample at a time to show you what I mean. Let me know if you get the attachment.

okay i think i get what you mean, try this :

(cell F2) =TTEST(IF(C2:C17="H1",A2:A17),IF(C2:C17="H1",B2:B17),2,1), "<shift>+<cntrl>+<Enter>"
(cell F3) =TTEST(IF(C2:C17="H2",A2:A17),IF(C2:C17="H2",B2:B17),2,1), "<shift>+<cntrl>+<Enter>"
(cell F4) =TTEST(IF(C2:C17="H3",A2:A17),IF(C2:C17="H3",B2:B17),2,1), "<shift>+<cntrl>+<Enter>"

these are array formulas, so you have to use the "<shift>+<cntrl>+<Enter>" to enter them
hope this helps

hey, this works great!! thanks a lot. I've been trying to write a formula for days...

@ Midna

Welcome to the forum.

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Thanks.

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ok, sorry about that. i see the thread tool,but do not know exactly what you are referring to about the 'small star icon located in the lower left corner of the post'. i definitely would like to give thanks.

its on the bottom left side of the post, in the (on my computer) grey area opposite Reply/Reply with Qoutes/Multi Qout.. options,

yep, found it. hope i did it right.

thanks Midna, and yes, looks like you did
no worries though, just glad i could answer your question