Trend Lines and Scatter Plots

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What is a scatter plot?

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A scatter plot is a graph that shows the relationship of two data sets.

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If a scatterplot has no correlation, what does that mean?

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It means its ordered pairs have no predictable pattern.

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What does positive correlation indicate in a scatter plot?

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Positive correlation indicates that as one variable increases, the other variable also increases.

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What does negative correlation indicate in a scatter plot?

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Negative correlation indicates that as one variable increases, the other variable decreases.

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What is the correlation coefficient?

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The correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables.

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What is causation?

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Causation indicates that one event is the result of the occurrence of another event.

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What is the purpose of trend lines in scatter plots?

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Trend lines are used to show the general direction or pattern of the data points in a scatter plot.

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How can you determine if there is a correlation in a scatter plot?

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You can determine correlation by observing the pattern of the data points; if they form a line or curve, there is a correlation.

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What does it mean if a scatter plot shows no correlation?

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It means that there is no discernible pattern or relationship between the two variables.

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What is an example of a situation with no correlation?

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The number of siblings you have and your weight is an example of no correlation.

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