Variability and Data Displays

Front

What is variability in data?

Back

Variability refers to how spread out or how much the data points differ from each other in a dataset.

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What is a measure of center?

Back

A measure of center is a value that represents the center or typical value of a dataset, commonly calculated as mean, median, or mode.

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

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What is the median?

Back

The median is the middle value in a dataset when the numbers are arranged in order. If there is an even number of values, it is the average of the two middle numbers.

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What is the mode?

Back

The mode is the value that appears most frequently in a dataset.

Front

What is the range of a dataset?

Back

The range is the difference between the highest and lowest values in a dataset.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a dataset into four equal parts, with each part containing 25% of the data.

Front

What is the upper quartile (Q3)?

Back

The upper quartile (Q3) is the median of the upper half of a dataset, representing the 75th percentile.

Front

How do you find the median of a dataset?

Back

To find the median, arrange the data in ascending order and locate the middle value.

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What is a box plot?

Back

A box plot is a graphical representation of a dataset that shows the median, quartiles, and any outliers.