Statistical Distributions (1)

Question 1

What does uppercase X represent?

Answer 1

Name of the variable

Question 2

Name of the variable

Answer 2

What does uppercase X represent?

Question 3

What does a random variable not have?

Answer 3

A fixed value

Question 4

A fixed value

Answer 4

What does a random variable not have?

Question 5

What does lowercase x represent?

Answer 5

A particular value X can take

Question 6

A particular value X can take

Answer 6

What does lowercase x represent?

Question 7

What do discrete random variables have?

Answer 7

Only a certain number of possible values

Question 8

Only a certain number of possible values

Answer 8

What do discrete random variables have?

Question 9

What is a probability distribution?

Answer 9

A table showing the possible values for x and the probability for each one

Question 10

A table showing the possible values for x and the probability for each one

Answer 10

What is a probability distribution?

Question 11

What is a probability function?

Answer 11

A formula that generates the probabilities for the different values of x

Question 12

A formula that generates the probabilities for the different values of x

Answer 12

What is a probability function?

Question 13

Formula for a discrete random variable?

Answer 13

EP(X=x)=1

Question 14

EP(X=x)=1

Answer 14

Formula for a discrete random variable?

Question 15

What does EP(X=x)=1 represent?

Answer 15

All the probabilities add up to 1

Question 16

All the probabilities add up to 1

Answer 16

What does EP(X=x)=1 represent?

Question 17

What is the cumulative distribution function?

Answer 17

P(X <= x_0) = Ep(x)

Question 18

P(X <= x_0) = Ep(x)

Answer 18

What is the cumulative distribution function?

Question 19

What does the cumulative distribution function mean?

Answer 19

That X will be less than or equal to a particular value

Question 20

That X will be less than or equal to a particular value

Answer 20

What does the cumulative distribution function mean?