Nursing 3340A/B Lecture Notes - Lecture 8: Standard Score, Corrective Lens, Unimodality
6 Dec 2017
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Descriptive v. inferential statistics (exam question: descriptive: describe the sample. Inferential: make generalization from sample to public; hypothesis testing is related to this. Descriptive & inferential: descriptive statistics (step i, using data to provide descriptions through numbers, calculations, graphs or tables, frequencies. N3340 week 8 lecture: central tendency, measures of dispersion. Inferential statistics (step ii: using data from a sample to make inferences and predictions about a population, types of statistical calculations are methodology dependent, this depends on the design of the study. Let(cid:859)s ta(cid:396)t (cid:449)ith o(cid:373)e data: take a sample of patients and record the number of medications they are taking. 3: level of measurement for mode: ordinal and interval, level of measurement for median: ordinal, interval, and nominal. If n is odd: median = the value at (n +1)/2, = (53 + 1)/2, = 54/2, = 27th position, therefore, the median = 4.
