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What is a scatterplot?

Back

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

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What does it mean when a scatterplot shows a positive correlation?

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

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What is the Mean in statistics?

Back

The Mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

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What is Mean Absolute Deviation (MAD)?

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Mean Absolute Deviation is a measure of the dispersion of a set of data points, calculated as the average of the absolute differences between each data point and the mean.

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How do you calculate the Mean?

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To calculate the Mean, sum all the values in the data set and divide by the number of values.

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How do you calculate the Mean Absolute Deviation?

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1. Find the Mean of the data set. 2. Subtract the Mean from each data point and take the absolute value. 3. Find the Mean of those absolute values.

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What is the purpose of using a scatterplot?

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Scatterplots are used to visually represent the relationship between two quantitative variables and to identify trends or patterns.

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What does it indicate if there is no correlation in a scatterplot?

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If there is no correlation, it indicates that changes in one variable do not predict changes in the other variable.

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What is the formula for calculating Mean Absolute Deviation?

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MAD = (Σ |x_i - Mean|) / N, where x_i represents each data point, Mean is the average, and N is the number of data points.

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What is an example of a positive correlation in real life?

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An example of a positive correlation is the relationship between hours studied and test scores; generally, more study time leads to higher scores.