Data Analysis

Question 1

What does a two-tailed t-test tell us about our two sets of data?

a) If the standard deviations are significantly different.
b) If the minimum value of one dataset is larger.
c) If the mean is greater than 0.05.
d) If the means are significantly different.

Answer 1

d) If the means are significantly different.

Question 2

What is the standard cutoff for p-values that scientific researchers use to determine
whether their statistical results are significant?
a) 0.05
b) 0.5
c) 0.9
d) 0.01

Answer 2

A-0.05

Question 3

Calculate and explain %’s, means, and mean comparison results from our data.

Answer 3

(see excel spreadsheet from class)