Scatter Plots

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 the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

Front

How do you determine the y-intercept from a line of best fit?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is 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

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

How can you estimate values using a scatter plot?

Back

You can estimate values by locating a point on the scatter plot and using the line of best fit to find corresponding values.

Front

What is the purpose of using a line of best fit?

Back

The purpose of using a line of best fit is to summarize the relationship between variables and make predictions.

Front

What does it mean if data points are widely scattered in a scatter plot?

Back

Widely scattered data points indicate a weak correlation between the variables.

Front

How do you identify the line of best fit visually?

Back

The line of best fit can be identified visually by drawing a straight line that best represents the trend of the data points.

Front

What is the significance of the slope in a line of best fit?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater change.