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[DOC File]AP® Statistics - SharpSchool
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Students are expected to have a graphing calculator with statistical capabilities. A limited number of calculators are available for use if the student can not provide one. Fathom2 Statistical Exploration Software is used to illustrate concepts and Minitab statistical output is used to enhance understanding of statistical results in a variety ...
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[DOC File]Power and Sample Size Calculation
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Factors that affect statistical power include the sample size, the specification of the parameter(s) in the null and alternative hypothesis, i.e. how far they are from each other, the precision or uncertainty the researcher allows for the study (generally the confidence or significance level) and the distribution of the parameter to be estimated.
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[DOCX File]Statistical Tests - Loudoun County Public Schools
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21. What is the meaning of a two-tailed test? If you are using a significance level of alpha = 0.05, a two-tailed test allots half of your alpha to testing the statistical significance in one direction and half of your alpha to testing statistical significance in the other direction.
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[DOCX File]Texas State University
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independent variables; and (c) their tests of statistical significance. 4.After rounding to the nearest whole number, the measure of age in years has a mean of 15.0 and a standard deviation of 2.0. Based on these rounded quantities: (a) What is the effect of participation in an after-school program on delinquency when age is one standard deviation
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[DOCX File]Texas State University
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the mean level of opportunities for crime? Report the actual numerical value, and whether this effect is statistically significant at the .05 level of statistical significance. (b) What is the effect of parental supervision on criminal offending when opportunities for crime are one standard deviation . above. the mean level of opportunities for ...
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[DOC File]AP Statistics
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Students will employ the use of a TI-83/84 graphing calculator, as well as statistical software and other web based applets to inquire more deeply into statistical concepts. Students will also be required to complete frequent writing assignments to display their competency in analysis of data as well as to prepare them for the AP examination.
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[DOC File]Section 1
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Define significance level. Define statistical significance (statistical significance at level α). Construction Objectives: Students will be able to: Explain the difference between a one-sided hypothesis and a two-sided hypothesis. Identify the three conditions that need to be present before doing a significance test for a mean.
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[DOC File]Guide to calculating, interpreting and using effect size
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However, in statistics the word ‘significance’ is often used to mean ‘statistical significance’, which is the likelihood that the difference between the two groups could just be an accident of sampling. If you take two samples from the same population there will always be a difference between them. The statistical significance is ...
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[DOC File]Sampling and Sample Size
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Statistical significance means that a difference is “real” and not just due to sampling variability or chance. That is, the difference would persist if the study were repeated with new random samples. Clinical significance addresses whether the difference is “important”; i.e. is the magnitude of the difference large enough to be useful ...
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[DOC File]Formula Sheet and List of Symbols, Basic Statistical Inference
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Formula Sheet and List of Symbols, Basic Statistical Inference. Symbol What it Represents. X variable. sample mean. μ population mean. s sample standard deviation. s2 sample variance. σ population standard deviation. σ2 population variance. sample proportion. p population proportion. q 1-p. n sample size. α significance level
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Statistical significance calculator mean