Intro to Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a type of graph that displays values for typically two variables for a set of data. Each point represents an ordered pair of values.

Front

What is an outlier in a scatterplot?

Back

An outlier is a point that is far outside the main cluster of points/ordered pairs in a scatterplot.

Front

How can you predict values using a trend line in a scatterplot?

Back

You can use the trend line to estimate the value of one variable based on the value of another variable.

Front

What does a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

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

Front

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

Back

A trend line helps to visualize the overall direction of the data points and can be used for predictions.

Front

What does it mean if a scatterplot has no correlation?

Back

If a scatterplot has no correlation, it means there is no apparent relationship between the two variables.

Front

How do you identify the strength of a correlation in a scatterplot?

Back

The strength of a correlation can be identified by how closely the data points cluster around the trend line.

Front

What is the formula to identify outliers using the IQR method?

Back

Outliers are identified as values that are less than Q1 - (1.5 x IQR) or greater than Q3 + (1.5 x IQR).

Front

What is the independent variable in a scatterplot?

Back

The independent variable is the variable that is manipulated or changed in an experiment, typically plotted on the x-axis.