What are the descriptive statistics you have learned in this chapter? How can they be used (i.e., what are the levels of measurement they are suitable for)?
What will be an ideal response?
Commonly used descriptive statistics for analyzing one variable at a time include:
?Frequency distributions, which can be used at the nominal and ordinal levels
?Percentage distributions, which can be used at the nominal and ordinal levels
?Measures of central tendency, including:
oMean, which can be used at the interval-ratio level
oMedian, which can be used at the ordinal and interval-ratio levels
oMode, which can be used at the nominal, ordinal, and interval-ratio levels
?Variability or dispersion, including:
oRange, which can be used at the ordinal and interval-ratio levels
oStandard deviation, which can be used at the interval-ratio level
oVariance, which can be used at the interval-ratio level
?Shape, including:
oSkewness, which can be used at the interval-ratio level
oKurtosis, which can be used at the interval-ratio level
?Standard scores, including:
oz-score, which can be used at the interval-ratio level
oRate, which can be used at the nominal and ordinal levels
oRatio, which can be used at the nominal and ordinal levels
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