Scatterplots - Do Now Friday_Dec 6

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 grid.

Front

How do you interpret a scatterplot?

Back

To interpret a scatterplot, look for patterns, trends, and correlations between the two variables represented.

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 does it mean if a scatterplot shows no correlation?

Back

No correlation means there is no discernible relationship between the two variables; changes in one do not predict changes in the other.

Front

What is the purpose of making predictions using a scatterplot?

Back

The purpose is to estimate the value of one variable based on the known value of another variable using the trend shown in the scatterplot.

Front

What is a weak correlation?

Back

A weak correlation means that the relationship between the two variables is not strong, and the data points are widely scattered.

Front

What is a strong correlation?

Back

A strong correlation means that the relationship between the two variables is clear, and the data points are closely clustered along a line.

Front

How can you identify the type of correlation in a scatterplot?

Back

You can identify the type of correlation by observing the direction and tightness of the data points: upward slope for positive, downward slope for negative, and scattered for no correlation.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that fall far from the trend of the rest of the data; they can significantly affect the correlation and predictions.