Sampling: This is the process of selecting a subset of individuals from a larger population to represent the whole. It's like choosing a handful of M&Ms from a bag to get an idea of the color distribution.
Margin of Error: This refers to the amount that survey results may differ from the true values in the entire population. Imagine trying to guess someone's weight - your guess might be close, but it probably won't be exactly right.
Bias: This is any systematic error in polling results due to non-random sampling or question wording that favors one outcome over another. It’s like if you only asked chocolate lovers about their favorite dessert - you’d likely get skewed results favoring chocolate desserts.