Scatter Plots, Clusters, and Outliers

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What is a scatter plot?

Back

A scatter plot is a type of graph that uses dots to represent the values obtained for two different variables - one plotted along the x-axis and the other plotted along the y-axis.

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What is a cluster in a scatter plot?

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A cluster is a group of data points that are closely packed together in a scatter plot, indicating that there is a concentration of values in that area.

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What is an outlier?

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An outlier is a data point that differs significantly from other observations in a dataset, often appearing far away from the cluster of points in a scatter plot.

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How can you identify an outlier in a scatter plot?

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An outlier can be identified as a point that lies far away from the main cluster of data points, often appearing isolated from the rest.

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What does it mean if a scatter plot has a gap?

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A gap in a scatter plot indicates a range of values where there are no data points, suggesting a lack of observations in that area.

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What is the purpose of using scatter plots?

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Scatter plots are used to visualize the relationship between two quantitative variables, helping to identify trends, clusters, and outliers.

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What does a positive correlation look like in a scatter plot?

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A positive correlation in a scatter plot is indicated by a pattern where points tend to rise from left to right, showing that as one variable increases, the other also tends to increase.

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What does a negative correlation look like in a scatter plot?

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A negative correlation in a scatter plot is indicated by a pattern where points tend to fall from left to right, showing that as one variable increases, the other tends to decrease.

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What is the significance of the x-axis and y-axis in a scatter plot?

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The x-axis typically represents the independent variable, while the y-axis represents the dependent variable, allowing for analysis of their relationship.

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How can you determine the year a specific donation amount was received from a scatter plot?

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You can determine the year by locating the point on the scatter plot that corresponds to the donation amount and then reading the year from the x-axis.