T-test for difference of two means in paired samples - statistics help including Excel examples
When we test for the difference of two means, it makes a difference whether the samples are paired or independent. In this video Dr Nic undertakes a hypothesis test on the difference of two means in paired samples.
0:00 Introduction
0:40 Before and after case
0:55 Boxplots
1:18 Defining d
2:00 Hypotheses
2:26 Steps of hypothesis testing
3:09 Using Excel to analyse
3:51 Interpreting output
4:20 Making the decision
4:37 What p tells us
5:10 Cat food example
5:48 Two-tailed
6:22 Conclusion
6:45 Credits
To find out more about the difference between paired samples and independent samples, and for a description of the two examples, see • Paired samples and independent sample...
To find out how to test for independent samples see:
Video: Hypothesis test: t-test for difference of two means, independent samples • Hypothesis testing: step-by-step, p-v...
Video: Two means t-test in Excel • Two means t-test in Excel - Statistic...
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