This is a very vague area for new students in Statistics, especially for non-math students.
Random Sample: Each member of the entire population has an equal chance of being selected.
Simple...
the same chance of being selected for each person _________________ That is basically true, but it is a little more subtle than that. A random sample comes from a certain population, and you have to...
There are a few ways to do this, but one of the most common ways is by giving each of your subjects a number. If there are 100 of them, number them 001-100. If there are 1000, number them 0001-1000...