# The denominator of the t score formula for the independent-samples t-test is 1 - population standard error 2 - estimated pooled standard deviation 3 - estimated pooled variance 4 - estimated standard error

The denominator of the t score formula for the independent-samples t-test is ______.

1 - population standard error
2 - estimated pooled standard deviation
3 - estimated pooled variance
4 - estimated standard error
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Alannah Hanson
We know that
t score formula for the independent-samples t-test is
$t=\frac{\overline{{x}_{1}}-\overline{{x}_{2}}}{\sqrt{\frac{{s}_{p}^{2}+{s}_{p}^{2}}{{n}_{1}+{n}_{2}}}}$
Here,
${S}_{p}$ = Pooled standard deviation
${n}_{1}$, ${n}_{2}$ = Sample sizes
$\overline{{x}_{1}},\overline{{x}_{2}}$ are means of samples.

The denominator is the estimated standard error .
Estimated standar error =$\frac{\overline{{x}_{1}}-\overline{{x}_{2}}}{\sqrt{\frac{{s}_{p}^{2}+{s}_{p}^{2}}{{n}_{1}+{n}_{2}}}}$
The denominator of the t score formula for the independent-samples t-test is estimated standard error .