2. Review Nielsen Ratings 400 houses were surveyed and 300 of these homes watched a specific program. (CSI) Nielson reported that 75% of American households watched CSI. What is the population, sample, parameter and statistic? What part is descriptive statistics and what part is inferential statistics.

3. Basic Stats Data Classification Section 1.2

4. Let’s get some information. What is your favorite movie? What is your position on an alpha listing in this class? How tall are you (in inches)? How much do you earn a week (you can not tell the truth on this one) ?

5. Data Classification Types of Data Qualitative Data Data that consists of attributes, labels or non-numerical information. Names, information that we can’t do a math operation (add, subtraction etc.) on. Or it would not make any sense. Names, house numbers, phone numbers. What type of car do you own or drive?

6. Data Classification Types of Data Quantitative Data Data that consists of numerical measurements or counts. Amount of one color is Quantitative. “Measurement” is the key word. That is why even though a phone number or a house address is a number it is Qualitative Data.

7. Levels of Measurement 1. Nominal 2. Ordinal 3. Interval 4. Ratio

8. Levels of Measurement Nominal Qualitative only Data at this level are categorized using names labels or qualitities. No Mathematical Computations can be made at this level. Your favorite movies, blood types, etc. Here is were those phone number could be.

9. Levels of Measurement Ordinal Qualitative or quantitative Data at this level can be arranged in order Differences between data entries are not meaningful. Your alpha position. You know your position, but you can not say being first is twice as good as being second. You can not subtract these values.

10. Levels of Measurement Interval Quantitative Only Data at this level can be arranged in order You can calculate meaningful differences between data entries There is not an inherent zero. (implies “none”) Zero just represents a point or position. Temperature is a good example

11. Levels of Measurement Ratio Quantitative Only Data at this level can be arranged in order You can calculate meaningful differences between data entries Very much like interval, but now zero means “none”. Two data values can be expressed so one is a multiple of the other. You can have zero money, and you can make twice as much as someone else.

12. Try it yourself. Pg 9 Pg 10 Pg 11

13. Put is all together Level of Measurement Put data in Categories Arrange Data in order Subtract data values Determine if one value is a multiple of another Nominal YesNo Ordinal Yes No Interval Yes No Ratio Yes

14. End of pain! Someone wake up the audience. HW is pg 13 Problems 1-20 Let me show you a neat part of your text.