Statistics-Target+B-Summarize+Your+Data-Investigations


 * Target B: Summarize Categorical data from a two way frequency table (include joint, marginal, and conditional relative frequencies)**

Hair and Eye Color

Hair color is the pigmentation of hair follicles due to two types of melanin: eumelanin and pheomelanin. Generally, if more eumelanin is present, the color of the hair is darker; if less eumelanin is present, the hair is lighter. Levels of emelanin can vary over time causing a person's hair color to change, and it is possible to have hair follicles of more than one color.

Particular hair colors are associated with ethnic groups. The shades of human hair color are assessed using the Fischer–Saller scale.The Fischer–Saller scale, named after Eugen Fischer and Karl Saller, is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations : A (light blond) B to E (blond) F to L (blond) M to O (dark blond) P to T (brown), U to Y (dark brown/black) I to IV (red) V to VI (red blond)


 * 1) Where on the Fischer–Saller scale do you fit in?**

The Martin–Schultz scale is a standard color scale commonly used in physical anthropology to establish more or less precisely the eye color of an individual; it was created by the anthropologists Martin and Schultz in the first half of the 20th century. The scale consists of 16 colors (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris :

1-2 : blue iris (1a, 1b, 1c, 2a : light blue iris - 2b : darker blue iris) 3 : blue-gray iris 4 : gray iris 5 : blue-gray iris with yellow/brown spots 6 : gray-green iris with yellow/brown spots 7 : green iris 8 : green iris with yellow/brown spots 9-11 : light-brown iris 10 : hazel iris 12-13 : medium brown iris 14-15-16 : dark-brown and black iris


 * 2) Where on the Martin–Schultz scale are you?**

Europe is one of the more diverse parts of the world when it comes to hair and eye color. Germany is the second largest country in Europe and below is the data from an online survey :

Co-occurence of hair colors and eye colors Within each row the percentages add up to 100 percent

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 * 3) If you lived in Germany where would you fall on these tables?**


 * 4) How rare is your hair and eye color with respect to the rest of the people surveyed? Defend your answer.**