Discussion: Sample size and estimate confidence intervals

Discussion: Sample size and estimate confidence intervals

Discussion: Sample size and estimate confidence intervals

In this unit, you learned how to determine sample size and estimate confidence intervals. For this assignment, you will create a PowerPoint presentation that further explores these concepts. In your presentation, you must include the following elements:

a definition of point estimate, standard error, confidence level, and margin of error;

a discussion of at least three major methods of determining sample sizes, comparing the different methods; and

an explanation of the effects (advantages and limitations) of a small sample size, a very large sample size, and an adequate sample size on any research study.

Your PowerPoint presentation must be a minimum of eight slides (not counting the title and reference slides). Use graphics as necessary to support the content of your presentation. You must use at least two references. Any information from those sources must be cited and referenced in APA format.

Course Textbook: Sullivan, L. M. (2018). Essentials of Biostatistics in public health (3rd ed.). Jones & Bartlett Learning. https://online.vitalsource.com/#/books/9781284142853

Please follow the directives to the letter and don’t forget the footnotes on each slide.

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You must proofread your paper. But do not strictly rely on your computer’s spell-checker and grammar-checker; failure to do so indicates a lack of effort on your part and you can expect your grade to suffer accordingly. Papers with numerous misspelled words and grammatical mistakes will be penalized. Read over your paper – in silence and then aloud – before handing it in and make corrections as necessary. Often it is advantageous to have a friend proofread your paper for obvious errors. Handwritten corrections are preferable to uncorrected mistakes.

Use a standard 10 to 12 point (10 to 12 characters per inch) typeface. Smaller or compressed type and papers with small margins or single-spacing are hard to read. It is better to let your essay run over the recommended number of pages than to try to compress it into fewer pages.

Likewise, large type, large margins, large indentations, triple-spacing, increased leading (space between lines), increased kerning (space between letters), and any other such attempts at “padding” to increase the length of a paper are unacceptable, wasteful of trees, and will not fool your professor.

The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument.