7th Grade Math

Chapter Study Guide and Review 477

Chapter Study

Guide and Review

Key Concepts

Probability (Lesson 1)

A tree diagram displays all possible outcomes.

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Compound Events (Lesson 2)

If the outcome of one event

• does not affect the outcome of another event, the
  events are called independent events.


• does affect the outcome of another event, the
  events are called dependent events.

Predictions (Lesson 3)

• Theoretical probability is based on what should
  happen when conducting a probability experiment.


• Experimental probability is based on what actually
  occurred during a probability experiment.

Be sure the following

Key Concepts are noted

in your Foldable.

Key Vocabulary

complementary event

compound event

experimental probability

Fundamental Counting

Principle

independent event

outcome

permutation

population

probability

random

sample

sample space

simple event

survey

theoretical probability

tree diagram

Vocabulary Check

State whether each sentence is true or false.

If false, replace the underlined word to make

a true sentence.

1. Compound events consist of two or more
   simple events.


2. A random outcome is an outcome that
   occurs by chance.


3. The Fundamental Counting Principle
   counts the number of possible outcomes
   using the operation of addition.


4. Events in which the outcome of the first
   event does not affect the outcome of the
   other event(s) are simple events.


5. The sample space of an event is the set of
   outcomes not included in the event.


6. P(not A) is read the permutation of the
   complement of A.


7. A(n) sample is any one of the possible
   results of an action.

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477_482_C08_SGR_895130.indd 477 12/29/09 1:31 PM