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Genome sizes (sample). Some genomics history. 1995: first bacterial genome, Haemophilus influenza , 1.8 Mbp, sequenced at TIGR first use of whole-genome shotgun for a bacterium Fleischmann et al. 1995 became most-cited paper of the year (>3000 citations)

Genome sizes (sample). Some genomics history. 1995: first bacterial genome, Haemophilus influenza , 1.8 Mbp, sequenced at TIGR first use of whole-genome shotgun for a bacterium Fleischmann et al. 1995 became most-cited paper of the year 2869 citations to date

Sample Sizes Considerations. Joy C MacDermid. General Principles. Why do we want many subjects? Generalizability Power Subgroup Analysis Why do we want a minimal number? Cost Time. What factors affect sample size?. Type of measure Variability of measure

Sample Sizes for IE. Power Calculations. Overview. General question: How large does the sample need to be to credibly detect a given effect size? What does “Credibly” mean here?

Error and Sample Sizes. PHC 6716 June 1, 2011 Chris McCarty. Types of error. Non-sampling error – Error associated with collecting and analyzing the data Sampling error – Error associated with failing to interview the entire population. Non-Sampling Error. Coverage error

Estimates and Sample Sizes. But, first. Example 1:. In a recent poll, 70% of 1501 randomly selected adults said they believed in global warming. Q: What is the proportion of the adult population that believe in global warming?

Sample Sizes for IE. Power Calculations. Overview. General question: How large does the sample need to be to credibly detect a given effect size? What does “Credibly” mean here?

Statistics Estimates and Sample Sizes. Chapter 7, Part 2 Example Problems. Finding Margin of Error. Question: Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level.

Chapter 7 Estimates and Sample Sizes. 7-1 Review and Preview 7-2 Estimating a Population Proportion 7-3 Estimating a Population Mean: Known 7-4 Estimating a Population Mean: Not Known 7-5 Estimating a Population Variance. 7.2. Estimating a Population Proportion. Definition.