Scatterplots

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 'Line of Best Fit' represent in a scatter plot?

Back

A 'Line of Best Fit' is a straight line that best represents the data points in a scatter plot, indicating the trend of the data.

Front

How can you determine if a scatter plot has a 'Line of Best Fit'?

Back

You can determine if a scatter plot has a 'Line of Best Fit' by checking if the data points cluster around a straight line.

Front

What does a positive slope in a scatter plot indicate?

Back

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

Front

What does a negative slope in a scatter plot indicate?

Back

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

Front

What does a slope of 0 mean in a scatter plot?

Back

A slope of 0 means there is no relationship between the two variables; the line is horizontal.

Front

What is the y-intercept in the equation of a line?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is 0.

Front

How do you write the equation of a line in slope-intercept form?

Back

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

Front

What does it mean if a scatter plot shows no correlation?

Back

No correlation means that there is no discernible pattern or relationship between the two variables in the scatter plot.

Front

What is the purpose of using a 'Line of Best Fit'?

Back

The purpose of using a 'Line of Best Fit' is to make predictions about one variable based on the value of another variable.