Studied by 1 person
Population
all members of a group
Sample
a random selection of members from a group
Sample proportion
The percentage taken from a random sample
Sample mean
The average calculated from measurements of a random sample
Bias
a distortion that makes data inaccurate
Independent Events
Events that don’t impact one another
z score
how many standard deviations above (positive) or below (negative) the mean number is
Sample space
a list of all possible outcomes from an event
Normal distribution
data takes on a bell shaped curve based on mean and stndard deviation.
binomial
we want probability for a set number of trials
Geometric
we want the probability of the first success
