Scatterplot review

Front

What is a scatterplot?

Back

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

Front

What does a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

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

Front

What does 'no correlation' mean in the context of a scatterplot?

Back

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

Front

How can you identify a scatterplot with no association?

Back

A scatterplot with no association will show data points that are randomly scattered without any discernible pattern or trend.

Front

What is a best fit line in a scatterplot?

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A best fit line is a straight line that best represents the data on a scatterplot, showing the general direction of the relationship between the variables.

Front

How do you estimate values using a scatterplot?

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You can estimate values by locating the point on the scatterplot that corresponds to the given value of one variable and then reading the value of the other variable from that point.

Front

What is the purpose of using scatterplots in data analysis?

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

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between a person's height and their age during childhood; as age increases, height generally increases.

Front

What is an example of a negative correlation?

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An example of a negative correlation is the relationship between the amount of time spent studying and the number of errors made on a test; as study time increases, errors tend to decrease.