Identification of the Wine The Judges' Overall Ranking:
Wine G is 2015 Occidental S.V.K. Vineyard ........ 1st place
Wine B is 2015 Kistler Laguna Ridge ........ 2nd place
Wine D is 2014 Occidental Catherine tied for 3rd place
Wine F is 2015 Occidental Catherine tied for 3rd place
Wine A is 2015 Kistler Natalie tied for 5th place
Wine C is 2014 Occidental Elizabeth tied for 5th place
Wine E is 2015 Occidental Elizabeth ........ 7th place
The Judges' Rankings
Judge Wine -> A B C D E F G
Orley 3 4 1 2 5 6 7
Bob 4 1 6 3 5 7 2
Dick 5 4 7 6 2 3 1
Mike 3 7 6 2 4 5 1
Zaki 6 4 3 5 7 1 2
Burt 6 1 4 7 5 3 2
Wine -> A B C D E F G
Group Ranking -> 5 2 5 3 7 3 1
Votes Against -> 27 21 27 25 28 25 15
(6 is the best possible, 42 is the worst)
Here is a measure of the correlation in the preferences of the judges which ranges between 1.0 (perfect correlation) and 0.0 (no correlation):
W = 0.1250
The probability that random chance could be responsible for this correlation is rather large, 0.6093. Most analysts would say that unless this probability is less than 0.1, the judges' preferences are not strongly related.
We now analyze how each taster's preferences are correlated with the group preference.
A correlation of 1.0 means that the taster's preferences are a perfect predictor of the group's preferences.
A 0.0 means no correlation, while a -1.0 means that the taster has the reverse ranking of the group. This is measured by the correlation R.
Correlation Between the Ranks of each Person With the Average Ranking of Others
Judge Spearman's Rho
Burt 0.1622
Bob 0.1622
Dick 0.0360
Zaki -0.0909
Mike -0.2000
Orley -0.8108
The wines were preferred by the judges in the following order. When the preferences of the judges are strong enough to permit meaningful differentiation among the wines, they are separated by -------------------- and are judged to be significantly different.
1. ........ 1st place Wine G is 2015 Occidental S.V.K. Vineyard
------------------------------------------------------------------------------------------------------------
2. ........ 2nd place Wine B is 2015 Kistler Laguna Ridge
3. tied for 3rd place Wine D is 2014 Occidental Catherine
4. tied for 3rd place Wine F is 2015 Occidental Catherine
5. tied for 5th place Wine A is 2015 Kistler Natalie
6. tied for 5th place Wine C is 2014 Occidental Elizabeth
7. ........ 7th place Wine E is 2015 Occidental Elizabeth
We now test whether the ranksums AS A WHOLE provide a significant ordering. The Friedman Chi-Square value is 4.500. The probability that this could happen by chance is 0.609.
We now undertake a more detailed examination of the pair-wise rank correlations that exist between pairs of judges. First, we present a table in which you can find the correlation for any pair of judges, by finding one of the names in the left hand margin and the other name on top of a column. A second table arranges these correlations in descending order and marks which is significantly positive significantly negative, or not significant. This may allow you to find clusters of judges whose rankings were particularly similar or particularly dissimilar.
Pairwise Rank Correlations
Correlations must exceed in absolute value 0.753 for significance at the 0.05 level, and must exceed 0.676 for significance at the 0.10 level.
Correlation Array for the tasting is:
Orley Bob Dick Mike Zaki Burt
Orley 1.000 -0.107 -0.964 -0.286 -0.357 -0.536
Bob -0.107 1.000 0.179 0.214 -0.179 0.286
Dick -0.964 0.179 1.000 0.321 0.143 0.464
Mike -0.286 0.214 0.321 1.000 -0.107 -0.429
Zaki -0.357 -0.179 0.143 -0.107 1.000 0.607
Burt -0.536 0.286 0.464 -0.429 0.607 1.000
Pairwise correlations in descending order
0.607 Zaki and Burt Not significant
0.464 Dick and Burt Not significant
0.321 Dick and Mike Not significant
0.286 Bob and Burt Not significant
0.214 Bob and Mike Not significant
0.179 Bob and Dick Not significant
0.143 Dick and Zaki Not significant
-0.107 Orley and Bob Not significant
-0.107 Mike and Zaki Not significant
-0.179 Bob and Zaki Not significant
-0.286 Orley and Mike Not significant
-0.357 Orley and Zaki Not significant
-0.429 Mike and Burt Not significant
-0.536 Orley and Burt Not significant
-0.964 Orley and Dick Significantly negative
COMMENT:
This was a throughly enjoyable tasting featuring the much sought after Kistler single vineyard Pinot noirs.
Although the wine maker Steve Kistler had made Pinot noirs alongside his celebrated chardonnays for many years, these wines were all from his Occidental winery, started in 2011. Where possible it was sought to pair the Catherine and Elizabeth cuvées, to provide further comparison. Both daughters work with him in Occidental.
The wines were marvelous to drink and we very closely rated with 2 ties amongst them. The SWK vineyard was one of the highest rated wines and in this tasting it was significantly preferred.
While the wines were already delicious at 9-10 years of age there was a feeling that they would continue to be enjoyable over the next 5+ years.
Return to the previous page