Scatter Plots Review

Front

What is a scatter plot?

Back

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

Front

What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot, helping to visualize the relationship between the variables.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to predict values by extending the line and finding the corresponding value on the other axis for a given input.

Front

What does a positive correlation indicate in a scatter plot?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate in a scatter plot?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

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

Why is the line of best fit important?

Back

The line of best fit is important because it allows for predictions and helps to understand the relationship between the variables.

Front

What does it mean if a line of best fit does not pass through the origin?

Back

If a line of best fit does not pass through the origin, it indicates that the relationship between the variables does not start at zero.

Front

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

Back

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

Front

How do you determine the slope of a line from a scatter plot?

Back

The slope of a line can be determined by selecting two points on the line and calculating the change in y divided by the change in x.