Statistics and Probability Quiz 1

If three coins are tossed, what should be the possible outcome or the sample space?

• 5

• 6

• 7

• 8

It is a function that associates a real number to each element in the sample space.

• Random Variable

• Probability Distribution

• Mean

• Variance

Tags

CCSS.HSS.MD.A.2

Suppose three coins are tossed. Let Y be the random variable representing the number of tails that occur. Find the values of the random variable Y.

• Y={1,2,3,4}

• Y= {0,1,3,4}

• Y = {0,1,2,3}

• Y = {0,1,2,3,4}

A random variable is a _______________ if it takes on values on a continuous scale.

• Random Variable

• Continuous Random Variable

• Discrete Random Variable

• Probability Distribution

A random variable is a _________________ if its set of possible outcomes is countable.

• Random Variable

• Continuous Random Variable

• Discrete Random Variable

• Probability Distribution

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Four coins are tossed. Let Z be the random variable representing the number of heads that occur. Find the values of the random variable Z

• Z = {0,1, 2, 3 ,4}

• Z = {1,2,3}

• Z = {0,1,3}

• Z = {0,1,2,3}

It is consists of the values a random variable can assume and the corresponding probabilities of the values.

• Discrete Random Variable

• Discrete Probability Distribution

• Mean of Discrete Probability Distribution

• Variance of Discrete Probability Distribution

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

The sum of the probability distribution is always equal to_____.

• 1

• 1.5

• 2

• 2.5

Tags

CCSS.7.SP.C.7A

Variance is denoted by _____.

• $\mu$

• $\sigma$

• $\mu^2$

• $\sigma^2$

Find : P(3)

• 1/8

• 1/4

• 3/8

• 2/8

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4