'99 confidence' diaporamas de présentation

Review #2

Review #2. Chapter 9 Chapter 10 Chapter 11 Chapter 12. Chapter 9. A statistic is a random variable describing a characteristic of a random samples. Sample mean Sample variance

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Statistics 303

Statistics 303. Chapter 7 Inference for Means. Inference for Means. To this point, when examining the mean of a population we have always assumed that the population standard deviation ( s ) was known. In practice this is seldom the case.

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Chapter 7 Estimation

Chapter 7 Estimation. Point Estimate. an estimate of a population parameter given by a single number. Examples of Point Estimates. is used as a point estimate for ?. s is used as a point estimate for ?. Error of Estimate.

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Chapter 7 Estimation

Chapter 7 Estimation. Point Estimate. an estimate of a population parameter given by a single number. Examples of Point Estimates. is used as a point estimate for ?. s is used as a point estimate for ?. Error of Estimate.

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QMS202

QMS202. Jason Yim Jessica Shute. Normal distribution. Normal distribution question Z-test question. Confidence Intervals.

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CHAPTER 4 (PART 2) STATISTICAL INFERENCES

CHAPTER 4 (PART 2) STATISTICAL INFERENCES. 4.2.3 Confidence Interval Estimates for Population Proportion. How to calculate proportion/percentage. EXAMPLE 4.4.

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CONFIDENCE INTERVALS

CONFIDENCE INTERVALS. point estimate : estimate exact value precise likely to be wrong interval estimate : range of values less precise less likely to be wrong. What a Confidence Interval Tells You. 1. Range of values 2. Level of confidence No hypothesis is directly tested.

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STATISTICAL INFERENCE PART V

STATISTICAL INFERENCE PART V. CONFIDENCE INTERVALS. INTERVAL ESTIMATION. Point estimation of ? : The inference is a guess of a single value as the value of ? . No accuracy associated with it.

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6.3 Confidence Intervals for Population Proportions

6.3 Confidence Intervals for Population Proportions. Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to find a sample proportion How to construct a confidence interval for a population proportion How to determine a minimum sample size when estimating a population proportion.

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6.3 Confidence Intervals for Population Proportions

6.3 Confidence Intervals for Population Proportions. Statistics Mrs. Spitz Spring 2009. Objectives/Assignment. How to find a sample proportion How to construct a confidence interval for a population proportion How to determine a minimum sample size when estimating a population proportion.

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Xiaoyuan Yan Frontier Research Center for Global Change, Japan Hiroko Akiyama, Kazuyuki Yagi

Factors influencing CH 4 and N 2 O emissions from Asian croplands and potential mitigation options. Xiaoyuan Yan Frontier Research Center for Global Change, Japan Hiroko Akiyama, Kazuyuki Yagi National Institute for Agro-environmental Sciences, Japan yanxy@jamstec.go.jp.

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Ch 6 Introduction to Formal Statistical Inference

Ch 6 Introduction to Formal Statistical Inference. 6.1 Large Sample Confidence Intervals for a Mean. A confidence interval for a parameter is a data-based interval of numbers likely to include the true value of the parameter with a probability-based confidence.

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Chapter 9: One- and Two- Sample Estimation

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Chapter 9: One- and Two- Sample Estimation

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MATH 1107 Elementary Statistics

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Pendugaan Parameter Proposi dan Beda Beda Proporsi Pertemuan 17

Pendugaan Parameter Proposi dan Beda Beda Proporsi Pertemuan 17. Matakuliah : I0134/Metode Statistika Tahun : 2007. Interval Estimation of a Population Proportion. Interval Estimate where: 1 - ? is the confidence coefficient z ? /2 is the z value providing an area of

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MC Notecards

MC Notecards. DO NOT WRITE ON THIS PAGE- CLASS SET After you finish your quiz, copy down each problem on a notecard and answer them.

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Confidence Intervals for Population Proportions

Confidence Intervals for Population Proportions. The point estimate for p , the population proportion of successes, is given by the proportion of successes in a sample. (Read as p-hat). is the point estimate for the proportion of failures where.

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Degrees of Freedom for the Factor

Upper Value = 1- p = 95% Confidence. Lower value = 1- p = 99% Confidence. Degrees of freedom for the Residual. F - Ratio Table. Degrees of Freedom for the Factor. 1. 2. 3. 4. 5. 6. 161.00. 200.00. 230.00. 234.00. 216.00. 225.00. 1. 4052.00. 4999.00. 5764.00. 5859.00.

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