As the manager of the human resources department at your firm, you are investigating the number or six days employees took during the last calendar years. For employees in the marketing area, the average number of sick days is 4.6 with standard deviation 2.1; for those in the research and design (R&D), the mean is 5.7 with standard deviation 3.2. Compute and compare the coefficients of variation for each set of data. What is the coefficient of variation for the marketing area? What is the coefficient of variation for the research and design (R&D) area? Which area of the firm has more variability?
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
As the manager of the human resources department at your firm, you are investigating the number or six days employees took during the last calendar years. For employees in the marketing area, the average number of sick days is 4.6 with standard deviation 2.1; for those in the research and design (R&D), the mean is 5.7 with standard deviation 3.2. Compute and compare the coefficients of variation for each set of data.
What is the coefficient of variation for the marketing area?
What is the coefficient of variation for the research and design (R&D) area?
Which area of the firm has more variability?
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