How do researchers determine what is true based on the data they collect? This question is one of the central concerns of statistics, which uses mathematical models to draw useful conclusions about the real world.

Spanning many countries and island territories, South America is home to many Spanish-speaking countries. Here, students can literally walk through history on their way to class and soak up the culture of ancient societies.

Academic institutions around the world offer a BSc or Bachelor of Science. This popular undergraduate degree is helpful in preparing students for the workplace or for advanced degree programs. The average BSc takes three to five years to complete.