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AP Statistics Chapter 4 Flashcards

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7361590650HistogramA graph that uses adjacent bars to show the distribution of a quantitative variable. Each bar represents the frequency (or relative frequency) of values falling in each bin.0
7361598588GapA region of the distribution where there are no values.1
7361604345Shape (of a histogram)A description of a histograms Modes, Symmetry, Outliers, and Gaps.2
7361610542Center (of a histogram)The place in the distribution of a variable that you'd point to if you wanted to attempt the impossible by summarizing the entire distribution with one number. Measurements include Mean and Median.3
7361620976Spread (of a histogram)A numerical summary of how tightly the values are clustered around the center. Measures include IQR (Interquartile Range) and Standard Deviation.4
7361635786UnimodalHaving one mode5
7361637883SkewedA distribution that is not symmetric and has one tail that stretches out farther than the other6
7361643402Skewed leftA distribution with a tail that stretches farther to the left than to the right.7
7361647693Skewed RightA distribution with a tail that stretches farther to the right than to the left.8
7361651233OutliersAn extreme value that doesn't appear to belong with the rest of the data.9
7361658182Interquartile RangeThe difference between the 3rd quartile and the 1st quartile. Also known as the middle 50%10
7361663466PercentileThe percent that falls below the n% of the data.11
7361672623Standard DeviationThe average distance a number is away from the mean in a distribution.12

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