# Statistics Essay

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Video Lecture 1 Descriptive questions: data Describing population characteristics Characteristics of data: central tendency

Characteristics of data: variability/dispersion

1. Measure of central tendency and measure of variability: the most adequate measure of central tendency is the mode and there is no adequate measure of variability (decision/claim). The choice for these measures is founded on the fact that the variable X is of nominal measurement level (data/ground). On nominal level the mode is the only adequate summary measure and there is no adequate measure of variability (warrant). Interpretation: The X sector has the highest number of … This is because the mode lies in this sector. The mode determines the sector with the highest frequency.

2. Measure of central tendency and measure of variability: the most adequate measure of central tendency is the mean and the most adequate measure of variability is the standard deviation (decision/claim). The choice for these measures is founded on the fact that the variable is of ratio measurement level (data/ground). On ratio level the most adequate summary measure is the mean and the most adequate measure of variability is the standard deviation (warrant). Interpretation: The mean… is about ... We expect that (at least) 75%