Mean, median, mode, range, and reading basic graphs and charts for a K-12 math course. Front: the term or short data set. Back: a plain-language definition or the computed value.
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- What is the mean of a data set?
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The sum of all values divided by how many values there are; also called the average.- Find the mean of: 2, 4, 6, 8
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5- What is the median of a data set?
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The middle value when all data is arranged in order from least to greatest.- Find the median of: 3, 7, 5, 2, 8
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5- How do you find the median when there is an even number of values?
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Find the two middle values and calculate their mean.- Find the median of: 1, 3, 5, 9
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4- What is the mode of a data set?
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The value that appears most often in the data set.- Find the mode of: 2, 5, 5, 7, 9, 5, 3
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5- What does it mean when a data set has no mode?
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Every value appears the same number of times, so no single value appears most often.- What does it mean if a data set has two modes?
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Two different values each appear the most (and equally) often.- What is the range of a data set?
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The difference between the largest and smallest values.- Find the range of: 12, 5, 8, 22, 3, 15
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19- What is a bar chart used for?
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Displaying and comparing quantities across different categories using rectangular bars.- What is a line graph used for?
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Showing how something changes over time by connecting points with lines.- What is a pie chart used for?
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Showing parts of a whole as slices, where all slices together make 100 percent.
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