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 a positive correlation in a scatterplot indicate?

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

Tags

CCSS.HSS.ID.B.5

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What does a negative correlation in a scatterplot indicate?

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

Tags

CCSS.HSS.ID.B.5

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What is an outlier in a scatterplot?

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

Tags

CCSS.8.SP.A.1

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What does it mean if a scatterplot shows no correlation?

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

Tags

CCSS.HSS.ID.B.5

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How can you identify a strong correlation in a scatterplot?

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A strong correlation is indicated by points that are closely clustered around a straight line, either positively or negatively.

Tags

CCSS.HSS.ID.B.5

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What is the purpose of using scatterplots in data analysis?

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Scatterplots are used to visually assess the relationship between two quantitative variables and to identify trends, correlations, or outliers.

Tags

CCSS.8.SP.A.1

Front

What is the significance of the slope in a scatterplot?

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The slope indicates the direction and steepness of the relationship between the two variables; a positive slope indicates a positive correlation, while a negative slope indicates a negative correlation.

Tags

CCSS.8.EE.B.5

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What does it mean if a scatterplot has a linear trend?

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A linear trend means that the data points can be approximated by a straight line, indicating a consistent relationship between the variables.

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How can you estimate values using a scatterplot?

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You can estimate values by finding the corresponding point on the scatterplot and reading the value from the axes.