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What Is Statistics?
Organizing Statistical Data
Summarizing Statistical Data
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0—under 95 percent confidence Alternative hypothesis analysis of variance Answer approximately average Bernoulli trials binomial Calculate Chapter Class Limits confidence interval correlation critical region critical value cumulative frequency decision employees equal expected profit expected value experimental conditions F-ratio fail to reject formal statistical terms frequency distribution given graph increase independent variables index numbers Lesson median Multiple-Choice Items mutually exclusive normally distributed null hypothesis number of unemployed opportunity loss outcome parameter payoff percent confidence interval percent confidence limits percentage percentile Poisson population mean predict probability distribution proportion of area qualitative variables quantity random sample random variable randomly selected ratio relative frequency distribution revised probabilities sample means sample points sample space sample statistic sampling distribution scores Sign test SSbet standard deviation standard error Statistical test Sum of Squares trend Type I error variance estimate weighted Xp(X