1. PUT THE FOLLOWING TEST SCORES IN ORDER AND GROUP THEM INTO FOUR GROUPS; 80 95 78 98 84 99 82 92 Question of day

2. AGENDA  Finish test  Notes on samples  Write your own notes  Exit ticket

3. VALID SAMPLE Notes on sample and populations

4. BOTH ARE POOR SAMPLING METHODS  Voluntary response - sampling occurs when people choose to respond  People that volunteer response have strong opinions, often negative, that may not represent population well  Convenience sampling- choosing sample by location or convenient  Often not representative of population

5.  Bias- occurs when poor sampling methods are used  The result of the sampling systematically favors certain outcomes

6. VALID SAMPLE  Representatives of the entire population  Large enough, but not to time consuming  Does not exclude any group  Equal opportunity for all opinions

7. SURVEY  Method of collecting data

8. DATA  Pieces of Information, Numbers and facts

9. YOU WRITE THESE IN  Population  Census  Parameter  Statistic  Sample  Sample space

10. EXIT TICKET  Give example of biased survey