Sociology 2205A/B Chapter Notes - Chapter 2: Interval Ratio, Mortality Rate, Frequency Distribution
19 Sep 2016
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Percentages and proportions allow for standardizing raw data and making it more understandable and relatable. Percentages are to the base 100 f = frequency, or the number of cases in any category n = the number of cases in all categories. Formula 2. 2: percentage (%) = (f/n) x 100. When working with small cases (fewer than 20) it is usually preferable to report in actual frquencies. Always report the number of observations along with proportions and percentages a. 2/3 people smoke, while 25 people were tested. Percentages and proportions can be calculated for variables at the ordinal and nominal levels of measurement. 43% of the sample is female (only expressing the relative size, female of the a. variable, gender) Ratios and rates provide some additional ways of summarizing results simply and clearly. Useful for comparing categories of a variable in terms of relative frequency. Ratios express the relative size of the categories/exactly how much one category outnumbers the other.
