Statistics Introduction

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What do you call the average of a set of numbers?
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The mean.
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How do you find the median of a set of numbers?
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Arrange the numbers in order and choose the middle one.
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What is the mode in a data set?
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The number that appears most frequently.
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What is the range of a set of numbers?
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The difference between the highest and lowest values.
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What tool can you use to visually display data frequencies?
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A bar graph.
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If you have the numbers 3, 5, and 7, what is their mean?
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5.
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In the data set 2, 2, 3, 4, 5, what is the mode?
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2.
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What is the range of the numbers 1, 3, 6, 10?
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9 (10 - 1).
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What graph displays data using parts of a circle?
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A pie chart.
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What is a frequency?
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The number of times a value appears in a data set.
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If a data set has no repeating numbers, what is the mode?
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It has no mode.
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What is a histogram?
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A graph showing the frequency of data within intervals.
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If a data set's mean, median, and mode are all the same, what is this data set likely to be?
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Symmetrical.
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How is data organized in a stem-and-leaf plot?
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By separating values into a 'stem' (the leading digit(s)) and a 'leaf' (the trailing digit).
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What is the median of the data set 4, 6, 6, 8, 10?
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6.
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