Esbeyde and Stephanie tried to find an association between the color and taste preference of Skittles candies. While there were potential lurking variables, they found interesting results.

1. Taste the Rainbow
By: Esbeyde and Stephanie
Saldana

3. Survey
What is your favorite Skittles flavor?
(circle one please)
Grape (purple) Lemon (yellow) Lime (green)
Orange (orange) Strawberry (red)
Gender: Male or Female :]

4. Is there a preference in flavor?
ora ng e lim e
s tra w b e rry
g ra pe
le m o n

5. Ho: There is no
preference in flavor.
Ha: There is a
preference in flavor.

6. Chi-Square
Goodness-of-Fit Test
( observed− expected )
2
χ =∑
2
expected

7. Check Conditions
Random
Independent
Normal

8. Orange Strawberry
n=66 Grape Lemon Lime
Observed
9 7 11 7 32
Expected
(13.2) (13.2) (13.2) (13.2) (13.2)

9. X²= 34.3
P≈ 0
Df= 5

11. • Are gender and choice Skittles flavor independent?
ora ng e lim e
tra w b e rry g ra p
e
le m o n

12. Ho: Gender and
Skittles preference
are independent.
Ha: Gender and
Skittles preference
are not independent.

13. grape lemon orange strawberry
lime
2 2 5 5 9
Male (3.14) (2.44) (3.83) (2.44) (11.15)
Female 7 5 6 2 23
(5.86) (4.56) (7.17) (4.56) (20.85)
Male n= 23 Female n=43

14. • Not enough in the
expected count.
Conditions were not met.

15. Potential Errors &
Recommendations
 Have a larger sample size
 Make people eat a different flavor first
 Give only one of each Skittles flavor
 Blind taste test
 Provide water

16. By: Esbeyde and Stephanie Saldana