STAAR Review - 9

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional plane.

Front

What does the slope of a line represent in a linear equation?

Back

The slope represents the rate of change of the dependent variable with respect to the independent variable. It indicates how much the dependent variable changes for a one-unit increase in the independent variable.

Front

What is the y-intercept in a linear equation?

Back

Front

How do you find the slope using the rise over run method?

Back

The slope is calculated by dividing the 'rise' (the change in the y-values) by the 'run' (the change in the x-values) between two points on the line.

Front

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

Back

Front

How do you set up an equation to find when two quantities are equal?

Back

To find when two quantities are equal, set their expressions equal to each other and solve for the variable.

Front

What does it mean for a scatterplot to show a positive correlation?

Back

A positive correlation in a scatterplot means that as one variable increases, the other variable also tends to increase.

Front

What is the purpose of using a scatterplot in data analysis?

Back

A scatterplot is used to visually assess the relationship between two variables, helping to identify trends, correlations, or patterns in the data.

Front

What is the formula for calculating the speed of sound based on temperature?

Back

Front

What does it mean if a line on a graph is decreasing?

Back

If a line on a graph is decreasing, it indicates a negative slope, meaning that as the independent variable increases, the dependent variable decreases.