WINETASTER ON 05/06/13 WITH 7 JUDGES AND 7 WINES BASED ON RANKS, IDENT=N Copyright (c) 1995-2013 Richard E. Quandt, V. 1.65
FLIGHT 1: Number of Judges = 7 Number of Wines = 7
A Tasting of 2004 Barolos
Identification of the Wine: The judges' overall ranking:
Wine A is Giuseppe Mascarello Monprivato tied for 3rd place Wine B is Marcarini Barolo Brunate ........ 7th place Wine C is Giovanni Manzone Barolo Gramolere tied for 3rd place Wine D is Giuseppe Mascarello Barolo Villero ........ 2nd place Wine E is Brovia Barolo ........ 5th place Wine F is Cavallotto Barolo Bricco Boschis ........ 6th place Wine G is R. Ratti Barolo Rocche ........ 1st place
The Judges's Rankings
Judge Wine -> A B C D E F G Mike 3. 6. 2. 1. 5. 7. 4. Burt 3. 7. 4. 1. 5. 6. 2. Ed 3. 6. 2. 7. 4. 5. 1. Zachi 1. 3. 5. 6. 2. 4. 7. Bob 5. 6. 4. 2. 3. 7. 1. Orley 5. 7. 4. 3. 6. 2. 1. Dick 5. 7. 4. 2. 3. 6. 1.
Table of Votes Against Wine -> A B C D E F G
Group Ranking -> 3 7 3 2 5 6 1 Votes Against -> 25 42 25 22 28 37 17
( 7 is the best possible, 49 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 = 0.3294
The probability that random chance could be responsible for this correlation is quite small, 0.0315. 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
Name of Person Correlation R Burt 0.8829 Dick 0.8108 Bob 0.7748 Mike 0.6667 Orley 0.5225 Ed 0.2143 Zachi -0.6786
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 R. Ratti Barolo Rocche --------------------------------------------------- 2. ........ 2nd place Wine D is Giuseppe Mascarello Barolo Villero 3. tied for 3rd place Wine C is Giovanni Manzone Barolo Gramolere 4. tied for 3rd place Wine A is Giuseppe Mascarello Monprivato 5. ........ 5th place Wine E is Brovia Barolo --------------------------------------------------- 6. ........ 6th place Wine F is Cavallotto Barolo Bricco Boschis 7. ........ 7th place Wine B is Marcarini Barolo Brunate We now test whether the ranksums AS A WHOLE provide a significant ordering. The Friedman Chi-square value is 13.8367. The probability that this could happen by chance is 0.0315 We now undertake a more detailed examination of the pair-wise rank correla- tions 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 0.79 for significance at the 0.05 level and must exceed 0.71 for significance at the 0.1 level Mike Burt Ed Mike 1.000 0.821 0.107 Burt 0.821 1.000 0.214 Ed 0.107 0.214 1.000 Zachi -0.321 -0.500 -0.143 Bob 0.607 0.786 0.321 Orley 0.143 0.536 0.321 Dick 0.571 0.821 0.357 Zachi Bob Orley Mike -0.321 0.607 0.143 Burt -0.500 0.786 0.536 Ed -0.143 0.321 0.321 Zachi 1.000 -0.571 -0.750 Bob -0.571 1.000 0.357 Orley -0.750 0.357 1.000 Dick -0.607 0.964 0.536 Dick Mike 0.571 Burt 0.821 Ed 0.357 Zachi -0.607 Bob 0.964 Orley 0.536 Dick 1.000 Pairwise correlations in descending order 0.964 Bob and Dick Significantly positive 0.821 Burt and Dick Significantly positive 0.821 Mike and Burt Significantly positive 0.786 Burt and Bob Significantly positive 0.607 Mike and Bob Not significant 0.571 Mike and Dick Not significant 0.536 Burt and Orley Not significant 0.536 Orley and Dick Not significant 0.357 Ed and Dick Not significant 0.357 Bob and Orley Not significant 0.321 Ed and Bob Not significant 0.321 Ed and Orley Not significant 0.214 Burt and Ed Not significant 0.143 Mike and Orley Not significant 0.107 Mike and Ed Not significant -0.143 Ed and Zachi Not significant -0.321 Mike and Zachi Not significant -0.500 Burt and Zachi Not significant -0.571 Zachi and Bob Not significant -0.607 Zachi and Dick Not significant -0.750 Zachi and Orley Significantly negative
COMMENT: These were all fantastic wines. Many people thought that they could be red Burgundies because they had good acidity, light color, excellent bouquets, and sweet fruit. It was wonderful to see this quality of wines at sensible prices compared to many other fine wine regions. Contrary to previous thinking, the conclusions of this tasting confirm that modern Barolos drink exceptionally well at ten years. This is a testimony to the stature of Barolos. It is interesting that the lowest ranking wine, the Marcarini, was the most tannic of all the wines. But all the wines had wonderful bouquet, and on that basis alone, it was difficult to distinguish between them. It should be noted that we have had a previous tasting of Barolos, namely the 1990s, but of course largely different ones from the ones tasted today. See Report 5. The overall agreement in the group was strong, which is also attested by the fact that most tasters' rankings were positively correlated with one another. Yet again we found ourselves in disagreement with Parker in that his lowest rated wine in this group ended up in the middle of the pack. Let this be another reminder that your own tastes should dictate your own preference and we encourage you to explore Barolo.
Return to previous page