Correlating Wine Price and Quality

Something people regularly ask about wine is, "Can you really tell the difference between the $10 and the $100 bottle?" By creating a scatterplot of the data and analyzing the trend in the quality of the wine relative to its price we are able to answer that question.

Observing the trend of the scatterplot as a whole it seems that there is a positive correlation between quality and price in wines. This trend is strongest towards the lower prices ($0 - $50) but becomes a more neutral correlation towards the more expensive bottles ($60 - $120). From this correlation we are able to make the following conclusion: there is a differnce between less and more expensive bottles of wine, until a certain point. Until about $60, more money buys a better bottle of wine. But after $60 there are diminishing returns on the more expensive bottles.

Looking at the individual varieties of wine, it does not seem that there is any significant deveation from the initial trend described above. All wines fall under the diminishing returns of quality per price of the bottle.

Note: For this analysis we used the top five most frequent wine to fit within performance constraints.