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16 Cards in this Set
- Front
- Back
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Statistics
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collecting ,organizing and interpreting data
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Data
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information,often numerical,which is gathered for statistical purpos e
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Statistical question
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a question that anticipates and account for a variety of answers
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Measure of central tendency
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measures that are used to describe the center of a set of data. these measures include the mean,median,and mode
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average
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also called mean
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mean
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the sum of the numbers in a set of a data divided by the number of piece of data
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median
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the middle number in a set of data when the data are arranged in numerical order. if the data have an even number,the median is the mean of the two middle numbers
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Mode
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the number(s) or item(s) that appear most often in a set of data
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Range
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the difference between the greatest number and the least number in a set of data
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measure of variation
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describes the distribution
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Quartile
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values that divide the data set into four equal parts
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Lower Quartile
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the median of the lower half of an set of data,also known as LQ
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Upper Quartile
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the median of the upper half of a set of data ,also known as UQ
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Interquartile Range
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one half of the data that lies between the lower quartile and upper quartile
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Outlier
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a value that is much higher or much lower than the other values in a set of data
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Mean absolute deviation
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in a set of data it is the average distance between each data value and the mean
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