Scatterplots & Trends

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 trend in a scatterplot indicate?

Back

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

Front

What does a negative trend in a scatterplot indicate?

Back

A negative trend 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

What does it mean if a scatterplot is nonlinear?

Back

A nonlinear scatterplot indicates that the relationship between the variables does not follow a straight line.

Front

How can you predict values using a scatterplot?

Back

You can predict values by finding the corresponding point on the line of best fit for a given input value.

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

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

Back

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

Front

How do outliers affect a scatterplot?

Back

Outliers can skew the interpretation of the data, affecting the line of best fit and the perceived relationship between variables.

Front

What is the purpose of analyzing scatterplots?

Back

Analyzing scatterplots helps to identify trends, relationships, and patterns between two variables.