Chapter 1- Descriptive/Inferential Stats, Basics
Statistics is the at and science of learning from data
Design- planning an investigative study, such as how to obtain relevant data
Sample- subjects for whom we have data
Population- all subjects of interest
Descriptive Statistics- refers to methods of summarizing the data
(graphs/averages/percents)
oBar Graph, Pie Chart, Dot Plot, Stem-and-Leaf Plot, Histogram
Inferential Statistics- refers the methods of making decision or predictions
about a population, based on data obtained from a sample of that population
Parameter- a numerical summary of the population
Statistic- a numerical summary of a sample taken from the population
Random Sampling- each subject in the population has the same chance of
being in the sample
