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2. Standard deviation - Wikipedia

   en.wikipedia.org/wiki/Standard_deviation

   To gain some geometric insights and clarification, we will start with a population of three values, x 1, x 2, x 3. This defines a point P = (x 1, x 2, x 3) in R 3. Consider the line L = {(r, r, r) : r ∈ R}. This is the "main diagonal" going through the origin.

3. Additional Mathematics - Wikipedia

   en.wikipedia.org/wiki/Additional_Mathematics

   Paper 1 (Duration: 2 Hours): Questions are categorised into Sections A and B and are tested based on the student's knowledge to grasp the concepts and formulae learned during their 2 years of learning. Section A consists of 12 questions in which all must all be answered, whereas Section B consists of 3 questions and students are given the ...

4. 68–95–99.7 rule - Wikipedia

   en.wikipedia.org/wiki/68–95–99.7_rule

   We have that (+) = + (), doing the change of variable in terms of the standard score =, we have , and this integral is independent of and . We only need to calculate each integral for the cases n = 1 , 2 , 3 {\displaystyle n=1,2,3} .

5. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   Elementary mathematics, also known as primary or secondary school mathematics, is the study of mathematics topics that are commonly taught at the primary or secondary school levels around the world. It includes a wide range of mathematical concepts and skills, including number sense , algebra , geometry , measurement , and data analysis .

6. Florida man accused of hate crime in deadly shooting of gay ...

   www.aol.com/florida-man-accused-hate-crime...

   A Florida man accused of a hate crime for killing a gay man is asking a judge to dismiss the charges, saying he acted in self-defense.

7. 5 Things to Avoid When You Have Alopecia Areata - AOL

   www.aol.com/5-things-avoid-alopecia-areata...

   2. Excessive Stress. Stress is a natural, normal part of the human experience, and your body knows how to handle it. When you’re under stress, your body releases stress hormones that activate ...