IXL - Graph a discrete probability distribution (Algebra 2 practice)

The table below shows the probability distribution of a random variable

X	P ( X )
42	0.2
43	0.2
44	0.1
45	0.2
46	0.1
47	0.1
48	0.1

Complete the graph of the probability distribution of

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

(

)

ref_doc_title.

Learn with an example

question

The table below shows the probability distribution of a random variable

X	P ( X )
133	0.2
134	0.2
135	0.1
136	0.2
137	0.2
138	0.1

Complete the graph of the probability distribution of

133

134

135

136

137

138

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

(

)

key idea

A random variable is a function that assigns a numerical value to each outcome in a sample space. Note that though random variables are functions, they are usually denoted by letters like

is a random variable,

(

)

(

)

is the probability that

takes the value

The function that maps

(

)

is the probability distribution of

A probability distribution is frequently represented as an equation, table, or graph.

solution

For each missing value of

graph a bar with height

(

)

133

134

135

136

137

138

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

(

)

Looking for more? Try this:

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	06

SmartScore
out of 100
IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

Teacher tools

Work it out

Not feeling ready yet? These can help:

GG.6Create bar graphs

PP.3Write a discrete probability distribution

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!