Ignite! style slides for Chapter 01 of introductory statistics text

1. What is Statistics All About, Anyway? Chapter 1: Terminology, Methods, Math

2. STATISTICS?

3. Statistics

4. Who do we study? Samples!Who are we interested in? Population!

5. Who do we study? Samples!Who are we interested in? Population! Parameter = characteristic of the population Statistic = Measured on the sample

6. What do we measure? Variables! Trait or characteristic Possibility of more than one value: it varies Values = the possible outcomes of variable Measured for each case (individual) in sample Usually many variables are measured

7. MEASUREMENT Major focus in Research Methods classes. All research is only as good as its measurement

8. Measurement Interested in abstract concepts = constructs Love, happiness, success, effectiveness Depression, risk, poverty, hatred, alienation Birth rate, foreclosure rate Operational definition What indicates the presence of love, risk, or success? Exactly what procedures dowe use to measure it?

9. Discrete vs Continuous Variables COUNTABLE = discrete FLOWING = continuous

10. REAL LIMITS Assign a number to location on the continuum. The number is not exact (e.g., 2.4) Refers to a range of values (here, 2.35 to 2.45)

11. Level (Scale) of Measurement Four levels Nominal Ordinal Interval Ratio The statistics wechoose for eachtechnique must be chosen according to the scale of measurement of the variable Need to recognize it instantly

12. Research methods All sciences depend on specific analytical methods.Statistics is an integral part of many methods

13. Correlational Methods Two variables are measured to determine the strength and direction of their relationship.

14. Experimental Method Measure outcomes Apply treatment to onegroup,not to another Statistics test whether the differences between groups could happen by random chance.

15. Independent and Dependent Variables Independent variable is manipulated by the experimenter Dependent variable is the outcome, also called the control condition Quasi-experiment = groups are not equivalent

16. Math Notation & Review See Appendix A for more extensive Math Review. Also “Purple Math” under Stats Success

17. Summation Notation Omnipresent Work the TUTORIALS in Aplia to gain efficiency How does summation fit into the Order of Operations?

18. Order of Operations Parentheses Exponents(powers, roots) Multiplication or Division SUMMATION Addition or Subtraction

19. Statistics as a Second Language Learn terms best by using them in meaningful work Practice how to apply definition, not just memorize Analyze research you learn in other courses

20. What is Statistics All About, Anyway? Look for as many hidden instances of statistics as you can find before the next class.