Stephen Rainey Kevin Weigand

About Chipotle Mexian Grill Founded in 1993 by Steve Ells Founded in 1993 by Steve Ells Denver, Colorado Denver, Colorado Smoked, dried jalapeño pepper Smoked, dried jalapeño pepper Known for “large burritos” Known for “large burritos” Organic Ingredients Organic Ingredients McDonald’s from ’98 to ’06 McDonald’s from ’98 to ’06 Net income $126 million Net income $126 million Kevin and Stephen “regulars” Kevin and Stephen “regulars”

What We want to Find Is chipotle male dominate, over priced, and a burrito only lunch option? (That’s the stereotype were trying to prove wrong) Is chipotle male dominate, over priced, and a burrito only lunch option? (That’s the stereotype were trying to prove wrong)

How We Collected Data Went to three different Chipotle’s Went to three different Chipotle’s –Valley Square, Willow Grove, North Wales Varied days/times Varied days/times Asked for permission- listened in on orders Asked for permission- listened in on orders Recorded into charts Recorded into charts Recorded prices Recorded prices

Distribution of Meats Chicken (46%) Chicken (46%) Steak (20%) Steak (20%) Barbacoa (12%) Barbacoa (12%) Carnitas (18%) Carnitas (18%) None (4%) None (4%) Kevin- Chicken Kevin- Chicken Stephen- Carnitas Stephen- Carnitas en- US/menu/ingredients/ingr edients.aspx en- US/menu/ingredients/ingr edients.aspx en- US/menu/ingredients/ingr edients.aspx en- US/menu/ingredients/ingr edients.aspx

Gender Vs. Meal Exploratory Data Analysis Bowl Burri to Othe r Sala d Taco s Total Fema le Male Total Male and Female most common order is Burrito at 35/69 -No Females ordered other -The average of female burritos is 48.28% and male is 52.5%

Chi-Square Test of Homogenity (Gender vs. Meal Type) Ho: The distribution of Gender and Meal Type is distributed uniformly Ha: The distribution of gender and Meal type is not distributed uniformly. Conditions 1). Categorical Data? 1). Yes 2). 2 Ind SRS? 2). Yes, Stated 3). All expected cell counts 3). No, 4 of 10 are greater than 5? not but we will continue anyway FemaleMale Bowl 5 (4.2) 5 (5.8) Burrito 14 (14.7) 21 (20.3) Other 0 (0.8) 2 (1.2) Salad 6 (4.2) 4 (5.8) Tacos 4 (5.0) 8 (7.0) Observe and Expected Data Table Expected in Parenthesis

Conditions Met - χ² Test of Homogeneity We fail to reject that the distribution of gender and meal type is distributed uniformly because the p-value of 0.48 is greater than α= We have sufficient evidence that the true distribution of gender and meal type is distributed uniformly.

Total Meal Prices Mean7.965 Minimum2.95 Q17.5 Median7.75 Q38.9 Max12.95 Standard dev The histogram is unimodal, and roughly symmetric. There is an outlier at $2. 95 and $4.50 (LF= ( ) because it is lower than $5.40, the lower fence. There is an outlier at $12.95 and $11.60 (UF= ( ) because they are greater than $11, the upper fence. 5 # Summary

1 Proportion T-Interval N = 69 N = 69 µ = µ = Confidence = 95% Confidence = 95% Conditions 1). SRS 1). Stated 2). Population ≥ 10n 2). Yes there are more than 690 chipotle customers 3).Normal population 3). Yes n is > 30 or n ≥ 30 (69)

Conditions Met- Student t distribution- 1 Sample t Interval x ± t*(s/ n) x ± t*(s/ n) 7.96 ± t*(1.64/ 8.31) 7.96 ± t*(1.64/ 8.31) ( , ) ( , ) We are 95% confident that the true mean of total prices at Chipotle is between 7.57 and 8.36 dollars per meal. We are 95% confident that the true mean of total prices at Chipotle is between 7.57 and 8.36 dollars per meal.

Meal vs. Meal Type DinnerLunchTotalBowl6410 Burrito Other022 Salad6410 Tacos6612 Total Again, the burrito is the most popular at dinner and lunch - The same amount of tacos were ordered at lunch and dinner -At dinner there was no other -The same amount of bowls, salads, and tacos were ordered at dinner (6)

Chi-Square Test of independence (Meal vs. Meal Type) Observe and Expected Data Table Expected in Parenthesis DinnerLunch Bowl 6 (4.5) 4 (5.5) Burrito 13 (5.7) 22 (19.3) Other 0 (0.9) 2 (1.1) Salad 6 (4.5) 4 (5.5) Tacos 6 (5.4) 6 (6.6) Ho: There is no association between meal and meal type Ha: There is an association between meal and meal type. Conditions 1). Categorical Data? 1). Yes 2). 2 Ind SRS? 2). Yes, Stated 3). All expected cell counts 3). No, 4 of 10 are greater than 5? not but we will continue anyway

Conditions Met - χ² Test of Independence We fail to reject that there is no association between meal and meal type because the p-value of 0.35 is greater than α= 0.05 We have suffiencient evidence that there is no association between meal and meal type.

Personal Opinions Chipotle is more of a male restaurant Chipotle is more of a male restaurant Burritos #1 Meal Burritos #1 Meal Not overpriced Not overpriced Stephen: Burrito Stephen: Burrito –Carnitas –No beans –No Guac –Salsa –Cheese –Corn Kevin: Burrito Kevin: Burrito –Chicken –Beans –Guac –Salsa Better than Moe’s! Better than Moe’s!

Bias and Error Possibly misheard an order Possibly misheard an order Added up prices wrong Added up prices wrong Groups of people with similar likes or trying same thing Groups of people with similar likes or trying same thing

Conclusion No association between meal and meal type, we cannot say that Chipotle is actually a lunch burrito place No association between meal and meal type, we cannot say that Chipotle is actually a lunch burrito place It is not overpriced because average cost is only $7.95 per meal, which is less than $10 and just $1.60 more than the basic meal available It is not overpriced because average cost is only $7.95 per meal, which is less than $10 and just $1.60 more than the basic meal available It cannot be said that Chipotle is only a male place, there was a fairly even distribution between males and females It cannot be said that Chipotle is only a male place, there was a fairly even distribution between males and females

Whenever I come to Philadelphia, I always eat a nice Chipotle burrito, and the Eagles.