Math 8 Ch. 5 Test Review

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 two independent events occurring?

Back

The probability of two independent events A and B occurring is calculated by multiplying their individual probabilities: P(A and B) = P(A) * P(B).

Front

What is a linear relationship in a scatter plot?

Back

A linear relationship in a scatter plot is when the points form a straight line, indicating a constant rate of change between the variables.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is given by y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line represent?

Back

The slope of a line represents the rate of change of y with respect to x; it indicates how much y changes for a unit change in x.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, minimizing the distance between the line and all data points.

Front

How do you find the probability of drawing two items without replacement?

Back

To find the probability of drawing two items without replacement, calculate the probability of the first draw and multiply it by the probability of the second draw given the first item was not replaced.

Front

What is a spinner and how is it used in probability?

Back

A spinner is a circular device divided into sections, each representing a different outcome. It is used in probability to simulate random events.

Front

What is the total number of outcomes when answering multiple-choice questions?

Back

The total number of outcomes when answering n multiple-choice questions with k choices each is k^n.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables, with points representing individual data points.