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Math 20-2 Statistics Statistics Review: But How Do I Know What to Do? Math 20-2 If You’re Given… A long list of data points A frequency table Two different means Two different standard deviations And Asked to Find… Mean, median, standard deviation A frequency table Mean, median, standard deviation A histogram A frequency polygon Compare Sketch normal distributions Compare Sketch normal distributions Then Do This… Math 20-2 Statistics A diagram of a normal distribution curve, with percentages marked in it, plus mean and Mean, standard deviation, and a data value Any 3 of mean, standard deviation, data value, and z-score Mean, standard deviation, and a data value of two or more different sets of data One or two z-scores Mean, standard deviation, and one or two data values Mean, standard deviation, and one or two data values Mean, standard deviation, and percentage above or below Results of a survey Percentage of data above, below, or between given data values Z-score The last one of these Which one is better relative to the group Percentage of data below, above, or between Percentage of data above, below, or between Number of objects/people above, below, or between Data value Margin of error % Confidence interval Confidence interval in number of people Confidence level Math 20-2 Statistics