im using day customers purchases and evening customer purchases and i want to
determine if evening customers puchase, on average, more than day customers..
i did a t test two tail but i just need to clarify what the numbers actually
mean and how they can help me?? can anybody help??????

agarcia -

You may need to provide more information if you want some assistance.

If you have complete data for day purchases and for evening purchases, use
the AVERAGE function to compute each mean.

If you have a sample of values from each group, then a t test may be
appropriate, but only if you have a random sample.

In any case, it is unlikely that you have "paired" values, so if you are
testing random samples you would use either t-Test: Two-Sample Assuming
Equal Variances or t-Test: Two-Sample Assuming Unequal Variances.

For more information, you could browse to www.google.com and search for "two
sample t test" (without the quotes). Or, if you are sure you want to use
Excel, search for "two sample t test excel" (without the quotes).

- Mike Middleton
http://www.DecisionToolworks.com
Decision Analysis Add-ins for Excel



"agarcia" wrote in message
...
im using day customers purchases and evening customer purchases and i want
to
determine if evening customers puchase, on average, more than day
customers..
i did a t test two tail but i just need to clarify what the numbers
actually
mean and how they can help me?? can anybody help??????