1. Inferential Statistics Using Excel
Michael A. Levin, PhD
@MichaelALevin
#OPEGStats16

2. Inferential Statistitcs Using Excel
Today’s Order
Introductions
Goal
Metric / Non metric
Pivot Table
Cross tabulations and 2
Correlation
Bivariate Regression
Multiple Regression
One-way ANOVA
Resources
Wrapping Up
July 14, 2016
Inferential Statistitcs Using Excel

3. Inferential Statistitcs Using Excel
Introductions
Name
Position
Employer
How you got into evaluations, analytics, research
Android, Apple, Other
SPSS, SAS, R
July 14, 2016
Inferential Statistitcs Using Excel

4. Inferential Statistitcs Using Excel
Goal
To introduce a few inferential statistical techniques for evaluators, analysis, researchers, etc. who are using Excel.
July 14, 2016
Inferential Statistitcs Using Excel

5. Inferential Statistitcs Using Excel
Nature of Data
Non-metric
Metric
July 14, 2016
Inferential Statistitcs Using Excel

6. Inferential Statistitcs Using Excel
Pivot Table
Organize gangly columns of data into elegant tables.
Example: Pareto dataset
July 14, 2016
Inferential Statistitcs Using Excel

7. Inferential Statistitcs Using Excel
Cross Tabs and 2
Easy interpretation, understanding
Stronger link between research, decision
Give more insights
Few respondents
Good for novices
Cover up
Small samples
July 14, 2016
Inferential Statistitcs Using Excel

8. Inferential Statistitcs Using Excel
Cross Tabs and 2
Exercise: Station
Part 1: Develop a cross tab based on income and family size
Part 2: Test the null hypothesis on cross tab from Part 1.
Part 3: What managerial insights are offered based on Part 2?
July 14, 2016
Inferential Statistitcs Using Excel

9. Inferential Statistitcs Using Excel
Correlation
Determines values associated with relationship between two (metric and/or nonmetric) variables.
July 14, 2016
Inferential Statistitcs Using Excel

10. Inferential Statistitcs Using Excel
Regression
Predict change in (metric) output given change from (metric) input.
Bivariate – one IV, one DV
Multiple – many IVs, one DV
Multivariate – one IV, many DVs
Example: Mao’s place dataset
Example: Europe dataset
Example: Autos dataset
July 14, 2016
Inferential Statistitcs Using Excel

11. Correlation and Regression
Exercise: Housedata
Part 1: What is the strength of relationship between square foot and house value?
July 14, 2016
Inferential Statistitcs Using Excel

12. Correlation and Regression
Exercise: Housedata
Part 1: How much would your home value increase by with a 500-square-foot addition?
Part 2: What percentage of the variation in home value is explained by the variation in house size?
Part 3: Is a 3,000-square-foot house listed at $500,000 out line with typical real estate values?
July 14, 2016
Inferential Statistitcs Using Excel

13. Correlation and Regression
Exercise: Cardata
Part 1: Develop a model that predicts MPG.
Part 2: What is the strength of relationship between the variables?
July 14, 2016
Inferential Statistitcs Using Excel

14. Correlation and Regression
Exercise: Oreos
Part 1: What is the strength of relationship between shelf position and Oreo sales?
Part 2: How does shelf position influence sales of Oreos?
Part 3: Include observation in your model.
July 14, 2016
Inferential Statistitcs Using Excel

15. Inferential Statistitcs Using Excel
ANOVA
Determine difference between, within groups.
Example: Oneway ANOVA dataset
July 14, 2016
Inferential Statistitcs Using Excel

16. Correlation and Regression
Exercise: Cakes
Part 1: Does temperature appear to influence cake quality?
Part 2: If you believe that the size of the oven used influences cake quality, does this analysis remain valid?
July 14, 2016
Inferential Statistitcs Using Excel

17. Correlation and Regression
Exercise: Usedcars
Part 1: Is there evidence that the sales people exhibit a significant difference in performance?
Part 2: If the first two people are men and the last two are women, is there significant evidence that the male sales reps perform differently than the female sales reps?
July 14, 2016
Inferential Statistitcs Using Excel

18. Inferential Statistitcs Using Excel
Resources
Books
Marketing Analytics: Data-Drive Techniques with Excel
Website
Chandoo.com
Real-statistics.com
YouTube
ExcelisFun
MktgStudyGuide
StatisticsFun
July 14, 2016
Inferential Statistitcs Using Excel

19. Inferential Statistitcs Using Excel
Wrapping Up
One thing
Excel = powerful
Get you started
Additional resources
July 14, 2016
Inferential Statistitcs Using Excel