Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

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

Back

It means that there is no discernible pattern or correlation between the two variables being plotted.

Front

What is a positive correlation in a scatter plot?

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A positive correlation occurs when an increase in one variable corresponds to an increase in the other variable, resulting in an upward trend in the scatter plot.

Front

What is a negative correlation in a scatter plot?

Back

A negative correlation occurs when an increase in one variable corresponds to a decrease in the other variable, resulting in a downward trend in the scatter plot.

Front

How can you predict values using a scatter plot?

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You can predict values by finding the trend line or pattern in the scatter plot and using it to estimate the value of one variable based on the value of the other.

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What does the term 'outlier' mean in the context of scatter plots?

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An outlier is a data point that differs significantly from other observations in the scatter plot, which can affect the overall correlation.

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What is the purpose of using scatter plots in data analysis?

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Scatter plots are used to visually assess the relationship between two variables, identify trends, and detect outliers.

Front

What does a scatter plot with a strong positive correlation look like?

Back

It appears as a cluster of points that trend upwards from left to right, indicating that as one variable increases, the other also increases.

Front

What does a scatter plot with a strong negative correlation look like?

Back

It appears as a cluster of points that trend downwards from left to right, indicating that as one variable increases, the other decreases.

Front

What is the significance of the line of best fit in a scatter plot?

Back

The line of best fit is a straight line that best represents the data points in a scatter plot, helping to illustrate the relationship between the variables.