Statistics and Probability Vocabulary

A diagram that summarizes data using the median, the upper and lowers quartiles, and the extreme values (minimum and maximum). Box and whisker plots are also known as box plots. It is constructed from the five-number summary of the data: Minimum, Q1 (lower quartile), Q2 (median), Q3 (upper quartile), Maximum.

• Dot Plot

• Box and Whisker Plot

• Line Plot

• Bar Graph

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The arrangement of values that show the spread of the data.

• Measure of Spread

• Frequency

• Histogram

• Distribution

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A statistical chart consisting of data points on a number line, typically using circles.

• Dot Plot

• Box and Whisker Plot

• Line Plot

• Histogram

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The number of times an item, number, or event occurs in a set of data

• Median

• Frequency

• Mode

• Mean

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The organization of raw data in table form with classes and frequencies

• Pictograph

• LIne Plot

• Box Plot

• Grouped Frequency Table/ Tally

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a way of displaying numeric data using horizontal or vertical bars so that the height or length of the bars indicates frequency

• Dot Plot

• Histogram

• Box and Whisker Plot

• Line Plot

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The difference between the first and third quartiles. (Note that the first quartile and third quartiles are sometimes called upper and lower quartiles.)

• Inter-Quartile Range (IQR)-

• Range

• Mean

• Median

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The largest value in a set of data.

• A lot

• Minimum

• Maximum value

• Lower Quartile

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The “average” or “fair share” value for the data. The mean is also the balance point of the corresponding data distribution. 𝑎𝑟𝑖𝑡ℎ𝑚𝑒𝑡𝑖𝑐 𝑚𝑒𝑎𝑛 = 𝑥̅= 𝑥1 + 𝑥2 + 𝑥3 +∙∙∙ 𝑥𝑛 𝑛

• Mean-

• Median

• Mode

• Range

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The mean and the median are both ways to measure the center for a set of data.

• Median

• Mode

• Mean

• Measures of Center-

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