Algebra I IM Unit 3: Two-Variable Statistics Review

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations, often expressed as a percentage.

Front

What does a positive correlation coefficient indicate?

Back

A positive correlation coefficient indicates that as one variable increases, the other variable also increases.

Front

In the equation y=mx+b, what does 'm' represent?

Back

In the equation y=mx+b, 'm' represents the slope of the line.

Front

What is the purpose of a line of best fit?

Back

The purpose of a line of best fit is to make predictions based on the data points in a scatter plot.

Front

What type of association does a scatter plot with a downward trend show?

Back

A scatter plot with a downward trend shows a negative linear association.

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept represents the value of y when x is zero in a linear equation.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

How do you calculate the slope of a line?

Back

The slope of a line is calculated by the formula (change in y) / (change in x) between two points on the line.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no relationship between the two variables.