Question Four If employees' salaries ( in hundred £) in company ABC are as follows: 11, 15, 17, 14, 16, 16, 14, 18, 17, 12 and the marks of another group of 12 male students in the same exam are as follows mode SD min Q1 Q3 max mean median 22.95 22.5 23 4 12 30 13.4 23.8 1) Which group is more homogenous? Comment on the results. 2) Comment on the results in the table.
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.
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