Scatter Plot & Line of Best Fit Practice

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 of the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

How do you determine if a line of best fit is accurate?

Back

A line of best fit is considered accurate if it minimizes the distance between itself and the data points, ideally having an equal number of points above and below it.

Front

What does it mean if there are too many data points above the line of best fit?

Back

It suggests that the line may underestimate the relationship, indicating that the actual values are generally higher than predicted by the line.

Front

What does it mean if there are too many data points below the line of best fit?

Back

It suggests that the line may overestimate the relationship, indicating that the actual values are generally lower than predicted by the line.

Front

What is the y-intercept in the context of a line of best fit?

Back

The y-intercept is the point where the line crosses the y-axis, representing the expected value of y when x is zero.

Front

How can you estimate calories burned from a scatter plot?

Back

You can estimate calories burned by locating the corresponding data point on the scatter plot and reading the value from the y-axis.

Front

What is the equation of a line of best fit?

Back

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

Front

What does a linear relationship in a scatter plot look like?

Back

A linear relationship in a scatter plot appears as a straight line, indicating a consistent rate of change between the two variables.

Front

How do you identify a scatter plot with a linear relationship?

Back

You can identify a scatter plot with a linear relationship by looking for a pattern where the data points cluster around a straight line.