Exam 1 Review: Symbols and Concepts

A= {1, 2} B= {2, 3}. What is A∩B?

Probability Distributions for discrete variables can be given as tables, pictures, or formulas

Two sets are independent when one element doesn't influence the chance of another happening

If you see "and" in a problem, use the multiplication rule: P(A) x P(B|A)

Which of the following is one of the 3 axioms?

What is μ? (Mu)

What is the formula for a compliment?

A random variable assigns a meaningful number to a sample point

Which of the following is one of the 3 axioms?

What symbol is a set intersection?

Which of the following is one of the 3 axioms?

Two sets are mutually exclusive (M.E) when they have no elements in common

The variance of a random variable is:

Which is not true about standard deviation?

Order matters in a combination

The formula for Expected Value is μ=Σx\left(P\left(x\right)\right)

σ^2=Σ\left(x-μ\right)^2\cdot P\left(x\right) is the formula for variance

Discrete variables are countable

Which of these is a subset?

When data points are mostly near each other, they are loosely clustered

If you see "or" in a problem, use the additive rule: P(A) + P(B)

Which of these is the Fundamental Rule of Counting?

If you see "given" in a problem, use the conditional probability rule: P(A|B)=\frac{P\left(A∩B\right)}{P\left(B\right)}

Which of these is continuous?

(1). For any event A, 0 ≤ P(A) ≤ 1, (2). P(s)= 1, (3). If two events are mutually exclusive, then the P(AUB)= P(A)+P(B)

A= {1, 2} B= {2, 3}. What is AUB?

The keyword "and" is used with a set union

What is s?