NURS 425 Chapter 1-13: NURS 425 Chapter 1-1: NURS 425 Chapter 1-: NURS 425 Chapter : NURS 425 Chapter : NURS 425 Chapter : Reading NotesText
26 Oct 2018
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Levels of measurement: each increase in level includes the factors of the previous level, plus it adds another qualifier. If a variable is at the ratio level, it meets all the criteria for the nominal, ordinal, and interval levels, plus there is a point where it does not exist. If the answer is no for any step, use the measurement before it. Chapter 3 descriptive stats, probability & measures of central tendency. In general, there is a lot less variance around the sample mean than the population mean, so sample variance tends to underestimate the population variance. Central tendency: the interquartile range (iqr) is the middle 50% of the collected data, outliers are defined as values that are more than 1. 5 times the iqr either above or below the edges of the graph. Probability distribution: rolling a die 1,000 times, has notches and changes, depending on what a sample looks like, short run.
