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Stats t-value interpretation

foobarr
foobarr asked
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Last Modified: 2007-12-19
Hi, I am having trouble interpreting the t-values of my stats test

I have two groups

group 1 - Large companies
group 2 - small companies


for eg. when I run my t-test using SPSS it generates:
t-value = -2.5
sig = 0.03

the significance I have no problem with but the t-value I do


since the t-value is negative can I say that the t-value favours group 2

or do I say the negative value the t-value favours group 1
?
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CERTIFIED EXPERT
Most Valuable Expert 2014
Top Expert 2015
Commented:
It  depends whether larger or smaller means of whatever you were measuring are considered more favourable to the group
and whether you took mean of group 1 - mean of group 2 or mean of group 2 - mean of group 1

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Commented:
sorry I dont quite get what you are saying...

the way I set it up was that i studied large vs small companies

so my group 1 was means of large companies
my group 2 was means of small companies
ozo
CERTIFIED EXPERT
Most Valuable Expert 2014
Top Expert 2015

Commented:
were the values that you were taking the means of things that companies would want to maximize, or things that companies would like to minimize?
did you compute your t-value by subtracting the large company means from the small company means, or by subtracting the small company means from the large company means?
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