scatterplots basics 1

Front

What is a scatterplot?

Back

A scatterplot 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 correlation in a scatterplot 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 scatterplot 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 scatterplot, showing the overall trend.

Front

How do you identify an outlier in a scatterplot?

Back

An outlier is a data point that is significantly different from the other points, often appearing far away from the cluster of data.

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.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; the data points do not show any trend.

Front

How can you determine the coordinates of a point on a scatterplot?

Back

The coordinates of a point on a scatterplot are determined by its position along the x-axis (horizontal) and y-axis (vertical).

Front

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

Back

The slope of the line of best fit indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Front

What does it mean if the line of best fit is horizontal?

Back

If the line of best fit is horizontal, it indicates that there is no relationship between the two variables.