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With a clear and detailed approach to the fundamentals of statistical theory, Examples and Problems in Mathematical Statistics uniquely bridges the gap between theory andapplication and presents numerous problem-solving examples that illustrate the relatednotations and ... The confidence coefficient is simply the decimal form of the confidence level. So, for example, if the confidence level is 95%, the confidence coefficient is .95. The next step is to solve for α / 2. So, continuing with our example, we would have 1 - α = .95 and find the value of α / 2 to be .025. The most commonly used confidence level is ... Dot Plots. Line Graphs. Histograms. Make a Bar, Line, Dot or Pie Graph. Pictographs. Scatter (x,y) Plots. Frequency Distribution and Grouped Frequency Distribution. Stem and Leaf Plots. Cumulative Tables and Graphs. MathCracker offers a wide variety of statistics calculators, that will perform step-by-step calculations for you. 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