'Random sample size' diaporamas de présentation

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Sample Size calculations in multilevel modelling

Sample Size calculations in multilevel modelling. William Browne University of Nottingham (With thanks to Mousa Golalizadeh and Lynda Leese). Summary. Introduction to sample size calculations. A simulation-based approach. PINT for balanced 2 level models. Effect of balance.

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Sample Size calculations in multilevel modelling

Sample Size calculations in multilevel modelling. William Browne University of Nottingham (With thanks to Mousa Golalizadeh and Lynda Leese). Summary. Introduction to sample size calculations. A simulation-based approach. PINT for balanced 2 level models. Effect of balance.

843 views • 43 slides

Sampling Distributions

Sampling Distributions. How likely are the possible values of a statistic?. The BIG Question. Did you prepare for today?. If so, mark yes and estimate the time you spent preparing on your frequency log. Part 1: the Sampling Distribution of the Sample Mean. Briefly: What have we covered?.

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Sampling Distributions

Sampling Distributions. How likely are the possible values of a statistic?. Part 1: the Sampling Distribution of the Sample Mean. Briefly: What have we covered?. We use statistical analysis to make inferences about a population. 2. Sample statistics can be used to make such inferences.

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15.Math-Review

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? + ?

Go to the definitions in Class Handout #2 to see some properties of a normal distribution, which is one type of bell-shaped (mound shaped) distribution that is very important in statistics:. normal distribution.

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Section 7.4

Section 7.4. How Do We Choose the Sample Size for a Study?. How are the Sample Sizes Determined in Polls?. It depends on how much precision is needed as measured by the margin of error The smaller the margin of error, the larger the sample size must be.

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ECON 103 Tutorial 17

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