CHAPTER 2.10: Hypothesis Testing

Question 1

what is a hypothesis test?

Answer 1

a statistical test of evaluating whether differences among groups are meaningful or could be by chance alone

Question 2

what is statistical significance?

Answer 2

implying that the mean of groups are farther apart than you would expect by chance alone

Question 3

what do p-values mean?

Answer 3

that there is a less than __ % chance that the difference between 2 groups is due to chance

Question 4

what are some limits when it comes to statistical testing?

Answer 4

the more tests conducted, the more likely it is to find a result that is due to chance alone

just because something is statistically significant does not mean its practically significant

Question 5

what is effect size?

Answer 5

a nuanced alternative to popular statistical testing.

calculated the degree of difference between 2 groups, reducing the significance decision to a simple yes/no.

the smaller the difference between two groups, the smaller the effect size and the larger the difference the larger the effect size.