how to determine weather use t-test assuming equal variances or unequal variance?

  • Thread starter Thread starter cargoma2003
  • Start date Start date
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cargoma2003

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example:
2 sample.
sample1 sample 2
size 11 11
mean 561.256 618.375
sd 101.465 82.455
use which t-test (equal variance or unequal variance)?
why?
 
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