Energy Descriptivr Statistics

Data Analysis: Describing Data - Descriptive Statistics Accountability Modules WHAT IT IS mollify to Table of Contents Descriptive statistics include the numbers, tables, charts, and graphs used to describe, organize, summarize, and surr poleer young info. Descriptive statistics atomic number 18 close to often used to examine: + interchange tendency (location) of info, i.e. where information tend to fall, as mensurable by the mean, median, and mode. + public mental picture (variability) of data, i.e. how spread out data are, as deliberate 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 home plate, 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 at central tendency via the mean, median, and mode and statistical distribution via the division or standard deviation is not sufficient. (See the definitions under for more details.) DEFINITIONS The following definitions are vital in arrangement descriptive statistics: + Variables are quantities or qualities that may assume whatever ace of a set of values. Variables may be classified ad as nominated, ordinal, or interval.

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

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