Unit 3 - Collecting Data

data collection terms (NB 1 pg 65) ANSWERS IN TERM

parameter

numeric value you want to figure out

true proportion, true mean, true slope

types of parameters of interest (3)

census

data gathered from every person/thing in a population

population

the group you want the parameter of interest from

sample

portion of the population from which you gather data

representative

the sample must be _____________ of the population, meaning it is unbiased.

statistic

the numeric value pulled from a sample

estimate

if the sample is well-representative of the population, then the statistic should provide a valid ________ of the parameter