Scatter plots- Lines of Best Fit

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 positive association in a scatter plot indicate?

Back

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

Front

What does a negative association in a scatter plot indicate?

Back

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

Front

What does 'no association' mean in the context of a scatter plot?

Back

No association means that there is no discernible relationship between the two variables; changes in one do not affect the other.

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, showing the general direction of the data.

Front

How do you identify an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from the other points in the scatter plot, often lying far away from the trend.

Front

What is the purpose of a trend line in a scatter plot?

Back

The purpose of a trend line is to summarize the relationship between the variables and make predictions based on the data.

Front

What does it mean if most points are below the trend line?

Back

If most points are below the trend line, it suggests that the trend line may not be a good fit for the data.

Front

How can you determine the coordinates of an outlier?

Back

The coordinates of an outlier can be determined by identifying the point that does not follow the general pattern of the other data points.

Front

What is the significance of the slope of the trend line?

Back

The slope of the trend line indicates the direction and strength of the relationship between the two variables.