A Student’s Review of Expert Reviews of Chocolate Bars

STA/ISS 313 - Spring 2023 - Project 1

The O_GGS

Data

• Our primary data set is the chocolate dataset

• It contains 10 variables with 1795 observations

• This dataset contains information on the company who makes the chocolate bars, the percent of cocoa, where the company is located, bean type & origin, expert review (out of 5 stars), and the date and reference number for each review

Questions

• Question 1: What characteristics lead to the most successful chocolate bars?

• Question 2: How have preferences among chocolate bar reviewers changed over time?

Figure 1: Cocoa Percentages vs. Rating by Country

Figure 1: How do cocoa percentages affect rating by country?

Figure 1: A deeper dive

Figure 2: How do cocoa percentages affect rating by country?

Figure 2: Map of preferences for Cocoa Bean origination

Figure 3: Where do the world’s most popular cocoa beans come from?

Figure 3: Cocoa percentage vs. rating, over time

Figure 4: Comparing the relationship between cocoa percentage and rating from 2006 to 2017

Figure 4: Continental Company Location vs. Ratings by Year

Figure 5: Relationship between company continent location and the ratings from 2006 to 2017