Sampling Methods 9/16/2015 Statistics Mr. DeOms SWBAT explain the purpose of and different varieties of sampling methods. SWBAT build community and understanding by sharing images of self.

What are the two categories of Sampling Methods? _____________________ _____________________ What are the advantages and disadvantages to both? + ___________________ + ___________________ ____________________ - ___________________ What are the 6 main types of Sampling Methods?

Congratulations! P1 Class Leaders Top Scores on Quiz #1 Tyla Shawna Kiara Jade Juwan Rodre Charley Shawna Tyla Kiara Donald

Please get out a piece of loose leaf paper for today’s Notes Name 9/16/2015 Stats – 1 Sampling Methods

Vocabulary in Today’s Lesson Convenience Sampling Voluntary Response Sampling Simple Random Sampling Stratified Sampling Cluster Sampling Systematic Random Sampling Observational Study Survey Population Sample Parameter Statistic Probability Sampling Non-Probability Sampling

Parameter – true value of a population variable. - based on data collected from the whole population Statistic - estimate of a population variable - based on data collected from a sample of the population

Sampling Method – how subjects are selected from population for a sample Probability sample Non-Probability Samples Probability known - Probability not known Good for analysis - Cheap, easy, and fast All parts of population have a chance of being included in sample

2 Main Types of Non-Probability Sampling Voluntary Response Sample – Subjects self select Convenience Sample – Subjects are easy to reach

4 Main Types of Probability Sampling - Simple Random Sample - Stratified Sample - Cluster Sample - Systematic Random Sample

Simple Random Sample – Population of N, sample size of n, all possible samples are equally likely to be selected

Stratified Sample – Population classified into homogenous groups, and subjects are randomly selected from each group

Cluster Sample – Population divided into heterogeneous groups, and subjects are selected from a few of the clusters

Systematic Random Sample – Select every kth element of the population

Complete first half of Stats.9.Homework - COMPLETELY ANSWER EACH QUESTION ON A PIECE OF LOOSELEAF PAPER OR TYPED. - USE COMPLETE SENTENCES AND EXPLAIN YOUR WORK. - IF YOU WORK WITH A PARTNER, ACKNOWLEDGE THAT PARTNER. - EVERY STUDENT NEEDS TO TURN IN THEIR OWN WORK, IN THEIR OWN WORDS.