Scatterplots

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What is a scatterplot?

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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.

Tags

CCSS.8.SP.A.1

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What does an outlier represent in a scatterplot?

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An outlier is a data point that differs significantly from other observations. It may indicate variability in the measurement or a possible experimental error.

Tags

CCSS.8.SP.A.1

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How do you identify an outlier in a scatterplot?

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An outlier can be identified as a point that is distant from the cluster of other points in the scatterplot.

Tags

CCSS.8.SP.A.1

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What is positive correlation in a scatterplot?

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Positive correlation occurs when an increase in one variable tends to be associated with an increase in another variable, resulting in a rising trend in the scatterplot.

Tags

CCSS.HSS.ID.B.5

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What is negative correlation in a scatterplot?

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Negative correlation occurs when an increase in one variable tends to be associated with a decrease in another variable, resulting in a falling trend in the scatterplot.

Tags

CCSS.HSS.ID.B.5

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What does no correlation mean in a scatterplot?

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No correlation means there is no apparent relationship between the two variables, and the points are scattered randomly.

Tags

CCSS.HSS.ID.B.5

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What is the purpose of using scatterplots?

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Scatterplots are used to visualize the relationship between two quantitative variables and to identify patterns, trends, or correlations.

Tags

CCSS.8.SP.A.1

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What does a linear relationship in a scatterplot indicate?

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A linear relationship indicates that the data points can be approximated by a straight line, showing a consistent rate of change between the variables.

Tags

CCSS.8.F.A.3

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How can you determine the type of correlation from a scatterplot?

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You can determine the type of correlation by observing the direction of the trend: upward for positive correlation, downward for negative correlation, or no clear trend for no correlation.

Tags

CCSS.HSS.ID.B.5

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What is the significance of the axes in a scatterplot?

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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.