STAT 202: Probability, Hypothesis Testing, and Regression
standard deviation in a population - answers✔✔σ
standard deviation in a sample - answers✔✔S
selected score - answers✔✔x
mean score in a population - answers✔✔µ
mean score in a sample - answers✔✔x bar
standard error - answers✔✔σ(subscript x bar)
Z score
tell you where score is relative to the mean
Population = first
Sample = second
(selected score - mean/standard deviation) - answers✔✔What do these equations represent?
(x−µ) ÷ σ
or (x - x bar) ÷ S
Determining selected score from z score
standard deviation in a population - answers✔✔σ
standard deviation in a sample - answers✔✔S
selected score - answers✔✔x
mean score in a population - answers✔✔µ
mean score in a sample - answers✔✔x bar
standard error - answers✔✔σ(subscript x bar)
Z score
tell you where score is relative to the mean
Population = first
Sample = second
(selected score - mean/standard deviation) - answers✔✔What do these equations represent?
(x−µ) ÷ σ
or (x - x bar) ÷ S
Determining selected score from z score
