STAAR 7 Math Probability and Numerical representation

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.

Front

What does it mean for events to be independent?

Back

Two events are independent if the occurrence of one does not affect the occurrence of the other.

Front

What is a complementary event?

Back

The complementary event is the event that represents all outcomes not included in the original event.

Front

How do you find the probability of the complementary event?

Back

P(complement) = 1 - P(event).

Front

What is a spinner in probability?

Back

A spinner is a circular device divided into sections, each representing a possible outcome when spun.

Front

If a spinner has 8 equal sections, what is the probability of landing on any one section?

Back

Probability = 1/8 for each section.

Front

What is the expected value in probability?

Back

The expected value is the average outcome of a probability experiment, calculated by multiplying each outcome by its probability and summing the results.

Front

How do you predict outcomes based on probability?

Back

You can predict outcomes by multiplying the probability of an event by the total number of trials.