Wine Nerds: Is there a difference in mean price between Napa & Sonoma

This hypothesis testing is trying to determine if there is a difference in mean Price between Napa and Sonoma.

Step 1: Define the Hypothesis

Ho: No difference in mean between Napa (1)  and Sonoma(2) scores

H1: Difference in mean between Napa (1)  and Sonoma(2) scores

Step 2 Run the One Way Anova

Step 3 Explain the results

We fail to reject the null hypothesis

The P-value for Mood’s median test is >.05 which leads us to conclude that there is no difference in the means between Napa and Sonoma scores.

Step 4 Conclusion

There is no statistical difference in the means between Napa and Sonoma scores.  The one  thing to add here is that the way our sample was for all wine with a score of 87 or more which may skew the result.  

(*)We picked One way ANOVA because both samples are normal

Wine Nerds: Is there a difference in the Price spread between Napa & Sonoma

This hypothesis testing is trying to determine if there is a difference in variance in Price between Napa and Sonoma.  In other words is the price spread different based on the region.
Step 1 Define my Hypothesis
Ho: There is no difference in the Price spread between Napa and Sonoma
H1: There is a difference in the Price spread between Napa and Sonoma

Step 2: Run the HOV test (Homogeneity of Variance) 

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Wine Nerds: Wine & Statistics

Last week I attended a statistics class I wanted to apply some of the concepts to a real life example.

After looking for a data set I remembered a spreadsheet a friend sent me before visiting Napa/Sonoma.  the spreadsheet included Wine Spectator's Scores and cost of the wines.  

The next series of article will be looking at the data in a statistical approach.  We will be looking at the correlation of Score v. Price and Price between regions, etc.  Below is the list of wineries that will included in the study.

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