Which of the following is an example for quantitative data?

a. Natural hair color of 30 fashion models

b. Scores of 55 students on a management test

c. Genders of 400 people attending a conference

d. Blood types of students in the tenth grade

e. Political affiliation of 1,200 randomly selected voters

Letter B is the correct answer.

Quantitative data is information that is expressed in the form of numbers or counts. In this case, only scores of 55 students on a management test can be considered quantitative data because natural hair color, gender, blood types and political affiliation cannot be expressed in numbers.