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Yummm … Starbucks Coffee

Yummm … Starbucks Coffee. By Nicole Rodi and Brittney Ferrari . About Starbucks . Starbucks Mission: To inspire and nurture the human spirit— one person, one cup, and one neighborhood at a time.

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Yummm … Starbucks Coffee

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  1. Yummm…Starbucks Coffee By Nicole Rodi and Brittney Ferrari

  2. About Starbucks Starbucks Mission: To inspire and nurture the human spirit— one person, one cup, and one neighborhood at a time. Environmental Mission: Starbucks is committed to a role of environmental leadership in all facets of our business. Starbucks Gives: The Starbucks Foundation, Social Investments, Ethos Water, Regional and Local Donations Diversity at Starbucks: Starbucks has made a business out of human connections, community involvement and the celebration of cultures.

  3. Starbucks Drinks Brewed Coffee • Coffee of the Week • Pike Place Roast Espresso • Latte • Cappuccinno • Caramel Macchiato Frappuccino • Caramel, Vanilla Bean, Mocha Tazo Tea • Chai Tea Latte • Hot/Iced Tea Classic Favorites • Hot Chocolate Other • Food (Bagel, Scone, Fruit) • Gift Cards • Merchandise (Cups, Bagged Coffee) • Water

  4. Drink Sizes Kids = Kids Tall = Small Grande = Medium Venti = Large

  5. Observational study We wanted to compare the gender, drink size and drink selection of people who drink Starbucks coffee. The categories we used for drink selection were identical to those of Starbucks. We went to 4 Starbucks: Montgomery Mall, 6-8 pm Monday Doylestown N Main Street, 7-9 pm Wednesday Doylestown Main Street, 7:30- 9:30 am Friday Warrington Barn Plaza, 7-9 pm Sunday We observed every costumer who came in during the 2 hour interval. This was the most effective way to randomize our study

  6. Chi- Square for AssociationTest 1

  7. Exploratory Data Analysis • The men’s drink size selection is right skewed, indicating that men preferred smaller sizes. • The smaller drinks of men might be a result of their desire for a quick “pick me up” rather than a delicious treat. • The women’s drink selection is more evenly distributed, showing that there was no clear preference in size. • This even distribution could be due to the fact that most women choose the drink and size that they are in the mood for at that moment in time.

  8. Chi –Square Assumptions State • 2 independent SRS • All expected counts are greater than or equal to 5 Check • 2 independent SRS- assumed • This condition was not met however we proceeded with the test

  9. Chi- Square Test for Association: Gender vs. Drink Size Ho: There is no association between gender and drink size Ha: There is an association between gender and drink We fail to reject Ho because the P-value of .27 >α= 0.05. There is sufficient evidence that there is no association between gender and size of drink.

  10. Chi- Square for Association Test 2

  11. Exploratory Data Analysis • The espresso category was ordered the most in every drink size. This is probably because it has the largest amount of drink options. • Classic favorites had the least amount of orders. Probably because people would rather get coffee at Starbucks.

  12. Chi- Square for Association: Drink Size vs. Drink Selection Ho: There is no association between drink size and drink selection Ha: There is an association between drink size and drink selection We fail to reject Ho because the P-value of .27 >α = 0.05. There is sufficient evidence that there is no association between drink size and drink selection.

  13. 2 Proportion Z- Test: Gender and Drink Selection

  14. Exploratory Data Analysis • Espressos was ordered the most by both women and men probably because it had the largest amount of drink selection. • There were more females who went to Starbucks.

  15. 2 Proportion Z-Test Assumptions State 2 Independent SRS Check Assumed .1563 x 128 = 20 .8437 x 128 = 108 .3458 x 107= 37 .6542 x 107 = 70 Pop > 1,280 Pop > 1,070

  16. 2-Proportion Z-Test: Gender and Drink Selection We reject the Ho because the P-value <α = 0.05. We have sufficient evidence that the proportion of women who chose coffee is less than the proportion of men who chose coffee. We believe this is due to the fact that women chose more specialty drinks such as Lattes.

  17. Lurking Variables • Time of day- Morning work rush, lunch rush, dessert rush • Price- Specialty drinks are a lot more expensive • Flavors- some people might not like the flavors offered • Nutritional value of drinks • We couldn’t hear as well in some Starbucks because the music was loud and costumers ordered too quietly. • The Starbucks on North Main Street has a drive-thru

  18. Personal Comments • We thought men would buy plain coffee and more women would buy fancier drinks • We expected more women than men to purchase Starbucks products • We thought women would get smaller sizes because they have less calories

  19. Conclusion Based on our observational study we feel that no more women than men go to Starbucks. More men ordered regular coffee more than women. However, the category of Espresso is most popular. The choice of men's drink size was typically smaller, whereas women's selection was more equally distributed.

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