modules:52954
Differences
This shows you the differences between two versions of the page.
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| modules:52954 [2020/06/20 14:39] – external edit 127.0.0.1 | modules:52954 [2020/06/21 14:04] – [Calculating the t-statistic] gerhard | ||
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| Line 917: | Line 917: | ||
| Note that we are using the calculations for two samples, with equal variances, and possibly different sample sizes. | Note that we are using the calculations for two samples, with equal variances, and possibly different sample sizes. | ||
| + | <WRAP hide> | ||
| $$ {\displaystyle t={\frac {{\bar {X}}_{1}-{\bar {X}}_{2}}{s_{p}\cdot {\sqrt {{\frac {1}{n_{1}}}+{\frac {1}{n_{2}}}}}}}} $$ | $$ {\displaystyle t={\frac {{\bar {X}}_{1}-{\bar {X}}_{2}}{s_{p}\cdot {\sqrt {{\frac {1}{n_{1}}}+{\frac {1}{n_{2}}}}}}}} $$ | ||
| Line 922: | Line 923: | ||
| $$ {\displaystyle s^{2}={\frac {1}{n-1}}\sum _{i=1}^{n}\left(Y_{i}-{\overline {Y}}\right)^{2}} $$ | $$ {\displaystyle s^{2}={\frac {1}{n-1}}\sum _{i=1}^{n}\left(Y_{i}-{\overline {Y}}\right)^{2}} $$ | ||
| + | </ | ||
| + | {{: | ||
| <code python> | <code python> | ||
modules/52954.txt · Last modified: 2020/06/21 14:06 by gerhard