ScatterPlots & Line of Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What is the line of best fit?

Back

The 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 the points.

Front

How do you determine the slope of a line of best fit?

Back

The slope of a line of best fit is determined by the change in the y-values divided by 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

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 the y-intercept represent in a line of best fit?

Back

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

Front

How can you identify a strong correlation in a scatter plot?

Back

A strong correlation is identified when the points on the scatter plot are closely clustered around the line of best fit.

Front

What is the purpose of using a line of best fit in data analysis?

Back

The purpose of using a line of best fit is to make predictions about one variable based on the value of another variable.

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no discernible relationship between the two variables, and the points are scattered randomly.