Energy Descriptivr Statistics

Data Analysis: Describing Data - Descriptive Statistics Accountability Modules WHAT IT IS simmer down to Table of Contents Descriptive statistics include the numbers, tables, charts, and graphs used to describe, organize, summarize, and empower young info. Descriptive statistics atomic number 18 most(prenominal) often used to examine: + interchange t kiboshency (location) of information, i.e. where entropy tend to fall, as mensurable by the mean, median, and mode. + public flick (variability) of data, i.e. how spread out data are, as heedful by the sectionalization and its square root, the standard deviation. + skew (symmetry) of data, i.e. how concentrated data are at the low or high end of the get over, as measured by the skew index. + kurtosis (peakedness) of data, i.e. how concentrated data are approximately a single value, as measured by the kurtosis index. Any verbal description of a data set should include examination of the higher up. As a rule, looking a t central tendency via the mean, median, and mode and distribution via the division or standard deviation is not sufficient. (See the definitions on a lower floor for more details.) DEFINITIONS The following definitions are vital in arrest descriptive statistics: + Variables are quantities or qualities that may assume each ace of a set of values. Variables may be sort as nominated, ordinal, or interval.

Nominal variables use names, categories, or labels for soft values. Typical nominal variables include gender, ethnicity, job title, and so forth. ordinal variables, like nominal variables, are categorical variables. However, the order or rank of th! e categories is meaningful. For example, round members may be asked to indicate their merriment with a training score on an ordinal scale ranging from poor to excellent. Such categories could be converted to a mathematical scale for further analysis. Interval variables are purely numeric variables. The nominal and ordinal variables noted above are clear-cut since they do not permit making statements about degree, e.g., Person...If you necessity to get a full essay, order it on our website: BestEssayCheap.com

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