In Example 1, there is a lot of variation within each group but not much variation between the groups. Because most of the difference is due to the people rather than the drink, the video concludes that the drink did not make much of a difference, leading to accepting the null hypothesis.
Conditions: The displayed Example 1 data are used.; Within-group variation is much larger than between-group variation.
In Example 1, there is a lot of variation within each group but not much variation between the groups. Because most of the difference is due to the people rather than the drink, the video concludes that the drink did not make much of a difference, leading to accepting the null hypothesis.
Conditions: The displayed Example 1 data are used.; Within-group variation is much larger than between-group variation.
In Example 2, the scores within each group are very close together, but the groups are very different from one another. Because between-group variation is large and within-group variation is small, the video concludes that the type of drink makes a big difference, leading to rejecting the null hypothesis.
Conditions: The displayed Example 2 data are used.; Between-group variation is much larger than within-group variation.
In Example 2, the scores within each group are very close together, but the groups are very different from one another. Because between-group variation is large and within-group variation is small, the video concludes that the type of drink makes a big difference, leading to rejecting the null hypothesis.
Conditions: The displayed Example 2 data are used.; Between-group variation is much larger than within-group variation.