In order to succeed in statistics, you’re going to have to be familiar with Order of Operations. The “operations”: addition, multiplication, division, subtraction, exponents, and grouping, can be performed in multiple ways, and if you don’t follow the “order”, you’re going to get the problem wrong. For example:
4 + 2 × 3
can equal 18 or 10, depending on whether you do the multiplication first or last:
4 + 2 × 3
6 × 3
18 (Wrong!)
4 + 2 × 3
4 + 6
10 (Right!)
This article shows you how to get it right every time with an acronym: PEMDAS.
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