9 Independent sample t test in python, Welch test in Python

Published: 30 July 2020
on channel: Statistics Made Easy
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Independent sample t test in python is demonstrated for equal variance cases but if the two variances are not equal, Welch test is used. Only equal_var= False should be written to apply Welch test else by default it is assumed that both populations have same variances. To check normality of data you can refer our earlier video on normal probability plot and Shapiro-Wilk test    • 6. Normal Probability Plot and Shapir...   and for checking equal variance assumption can use Leven's test or Bartlett's test in subsequent video. For dependent samples t test kindly refer to earlier video    • Video  


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