Statistics Exam 3 Review

A _________ ________ is a numerical measure of the outcome of a probability event, so its value is determined by chance. (use X to denote this)

Tags

CCSS.HSF-LE.A.1B

A random variable that is discrete would be

• finite or countable

• infinite or uncountable

• add up to zero

• add up to one

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

A random variable that is continuous would be

• infinte or uncountable

• finite or countable

• add up to one

• add up to zero

Tags

CCSS.7.SP.C.7A

A ___________ ____________ ____________ provides the possible values of the random variable and their corresponding probabilities. (Ex. Flipping a coin twice, letting X= number of heads= HH, TH, HT, TT)

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CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Let P(x) be the probability that X=x, then,

• summation of p(X) =1

• 0 ≤ p(X) ≤ 1

Tags

CCSS.7.SP.C.7B

This formula is used to represent...

M(X) = ∑ x * P(x)

• Mean of a discrete random variable

• Mean of a random variable

• Standard deviation of a random variable

If the experiment is repeated many times, as the number of repetitions increases, the mean value will approach

• the mean

• the standard deviation

• the mode

• none of the above

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Discrete or Continuous?

Let x represent the length of time it takes to get to work.

• Discrete

• Continuous

It is a variable whose values depend on outcomes of a random phenomenon.

• Random Variable

• Discrete Variable

• Continuous Variable

• Independent Variable

Tags

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

In the binomial probability distribution,

n is

• the number of trials

• the probability of success

• the number of successes

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4