Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does a positive relationship in a scatterplot indicate?

Back

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

Front

What does a negative relationship in a scatterplot indicate?

Back

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

Front

What does 'no relationship' mean in a scatterplot?

Back

'No relationship' means that there is no discernible pattern or correlation between the two variables.

Front

How can you identify a positive correlation in a scatterplot?

Back

A positive correlation is identified when the points on the scatterplot slope upwards from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation is identified when the points on the scatterplot slope downwards from left to right.

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.

Front

What does the term 'outlier' mean in the context of a scatterplot?

Back

An outlier is a data point that differs significantly from other observations in the dataset.

Front

What is the significance of the trend line in a scatterplot?

Back

A trend line shows the general direction of the data points and helps to visualize the relationship between the variables.

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

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