Box and Whisker Plots and Dot Plots

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What is a Box and Whisker Plot?

Back

A Box and Whisker Plot is a graphical representation of a dataset that displays its minimum, first quartile, median, third quartile, and maximum values.

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What does the 'whisker' represent in a Box and Whisker Plot?

Back

The 'whisker' represents the range of the data outside the quartiles, extending from the minimum to the first quartile and from the third quartile to the maximum.

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What is the purpose of a Dot Plot?

Back

A Dot Plot is used to display the frequency of data points in a dataset, showing individual values as dots along a number line.

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How do you find the median in a dataset?

Back

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of values, average the two middle values.

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What is a quartile?

Back

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

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What is the lower quartile (Q1)?

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The lower quartile (Q1) is the median of the lower half of a dataset, representing the 25th percentile.

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What is the upper quartile (Q3)?

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

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How do you calculate the interquartile range (IQR)?

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The interquartile range (IQR) is calculated by subtracting the lower quartile (Q1) from the upper quartile (Q3): IQR = Q3 - Q1.

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What does the maximum value represent in a dataset?

Back

The maximum value is the largest number in a dataset, indicating the highest data point.

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What does the minimum value represent in a dataset?

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The minimum value is the smallest number in a dataset, indicating the lowest data point.