R Tutorial 9: How to Perform T-test in R for Equal/Unequal Unknown Population Variance

This video is going to show how to perform T-test in R under different conditions. First of all, we have to verify for the normality assumption of samples. Then we have to check if the population variances are equal or not to choose the right formula for T-test. Finally we apply T-test with corresponding hypothesis and Type I error (alpha) to calculate p-value and confidence interval.

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• #science_technology
• #r_tutorial
• #t_test
• #equal_variance
• #unequal_variance
• #unknown_population_variance
• #normality
• #normality_assumption
• #variance_test
• #type_i_error
• #alpha
• #p_value
• #p_value