I’m going the Free Harvard Online course at edX (HarvardX: PH207x Health in Numbers: Quantitative Methods in Clinical & Public Health Research). Join a free course: https://www.edx.org/ I’ll continue update this article as I go through this course. Question Note’s during course: Q1. (2012-10-16 @ 00:12) Age are …… data, cause there are infinite numbers of…