How To Find Margin Of Error On Statdisk
Since the confidence level is 95%, there is 5% split between the two tails. That makes 2.5% in each tail. The area to the left of the left critical value is 2.5%, which is entered as the decimal 0.025. Click Evaluate If you want the critical value on the right side, you can use the symmetry involved and just make the critical value you found above positive. Another way to find the critical value on the right directly is to repeat the steps above, but since there is 2.5% to the right of the right critical value, there is 97.5% to the left. Finding the Margin of Error and Confidence Interval (Questions 7, 9) Go to Analysis / Confidence Intervals / Proportion One Sample The confidence level is 0.95 (95%) Enter the sample size and the number of successes (how many strawberries you had) Click Evaluate The output will give the margin of error and the confidence interval. Finding the Areas (Question 14) You can do this with the normal table in the book as well. Go to Analysis / Probability Distributions / Normal Enter the test statistic in the z-value box Click Evaluate. Statdisk returns the area to the left, the area to the right, and the 2-tailed area. Go to Math 113 Activities page. Go to Math 113 homepage Last updated December 26, 2006 5:03 PM
SampleConfidence Interval: Mean – Two Independent SamplesConfidence Interval: Mean-Matched PairsConfidence Interval: Proportion One SampleConfidence Interval: Proportion Two SamplesConfidence Interval: St Dev One SampleConfidence Interval: St. Dev. Two SamplesContingency TablesCorrelation and RegressionDescriptive StatisticsDice Roll Random Sample GeneratorExplore DataF DistributionFisher Exact TestFrequency Table Random Sample GeneratorGoodness-of-Fit: Equal Exp. Freq’sGoodness-of-Fit: Unequal Exp. Freq’sHistogramHypothesis Test: Mean - One SampleHypothesis Test: Mean – Matched PairsHypothesis Test: Mean – Two Independent SamplesHypothesis Test: Proportion One SampleHypothesis Test: Proportion Two SamplesHypothesis Test: St. Dev. One https://people.richland.edu/james/spring07/m113/activities/act05-sd.html SampleHypothesis Test: St. Dev. Two SamplesKruskal-Wallis TestMcNemar’s TestMultiple RegressionNormal DistributionNormal Quantile PlotNormal Random Sample GeneratorNormality AssessmentOdds Ratio and Relative RiskOne-Way Analysis of VariancePie ChartPoisson DistributionPoisson Random Sample GeneratorRandom Seed GeneratorRank CorrelationResidual PlotRuns Test for RandomnessSample Size: ProportionSample Editor / Data WindowSample Size: MeanSample Size: St. Dev.Sample TransformerScatterplotSensitivity and SpecificitySign Test Given http://help.statdisk.org/samplesizeestimatemean Number of SignsSign Test Given Pairs of ValuesStudent t DistributionTwo-Way Analysis of VarianceUniform Random Sample GeneratorWilcoxon (Indep. Samples)Wilcoxon (Matched Pairs) Sample Size: Mean When entering the confidence level value, the number should be expressed in a decimal format, such as .95. A positive value for the margin of error must also be entered. A positive value for the population standard deviation must also be entered. Enter a value for the population size only if sampling is done without replacement from a finite population. (The population size is usually unknown, and if no entry is made for the population size, it is assumed that sampling is done with replacement or the population size is infinite or very large.) Click on the Evaluate button to obtain the results. To close the window, click on the X at the top of the module window. Copyright 2013 statdisk.org Sign in|Report Abuse|Print Page|Powered By Google Sites
SampleConfidence Interval: Mean – Two Independent SamplesConfidence Interval: Mean-Matched PairsConfidence Interval: Proportion One SampleConfidence Interval: Proportion Two SamplesConfidence Interval: St Dev http://help.statdisk.org/samplesizeestimateproportion One SampleConfidence Interval: St. Dev. Two SamplesContingency TablesCorrelation and RegressionDescriptive StatisticsDice Roll Random Sample GeneratorExplore DataF DistributionFisher Exact TestFrequency Table Random Sample GeneratorGoodness-of-Fit: Equal Exp. Freq’sGoodness-of-Fit: Unequal Exp. Freq’sHistogramHypothesis Test: Mean - One SampleHypothesis Test: Mean – Matched PairsHypothesis Test: Mean – Two Independent how to SamplesHypothesis Test: Proportion One SampleHypothesis Test: Proportion Two SamplesHypothesis Test: St. Dev. One SampleHypothesis Test: St. Dev. Two SamplesKruskal-Wallis TestMcNemar’s TestMultiple RegressionNormal DistributionNormal Quantile PlotNormal Random Sample GeneratorNormality AssessmentOdds Ratio and Relative RiskOne-Way Analysis of VariancePie ChartPoisson DistributionPoisson Random Sample GeneratorRandom Seed GeneratorRank CorrelationResidual how to find PlotRuns Test for RandomnessSample Size: ProportionSample Editor / Data WindowSample Size: MeanSample Size: St. Dev.Sample TransformerScatterplotSensitivity and SpecificitySign Test Given Number of SignsSign Test Given Pairs of ValuesStudent t DistributionTwo-Way Analysis of VarianceUniform Random Sample GeneratorWilcoxon (Indep. Samples)Wilcoxon (Matched Pairs) Sample Size: Proportion When entering the confidence level value, the number should be expressed in a decimal format, such as .95. A positive value for the margin of error must be entered as a positive decimal number less than 1, such as 0.03. Enter a value for "Estimate of p" only if such a value is known (otherwise, leave it blank). Enter the positive value between 0 and 1 in decimal form. This value might be known from a prior study or from a reasonable estimate of p. Enter a value