One of the great difficulties a small restaurant manager faces is to please every customer who differs widely in age. On a randomly selected evening, this restaurant served 12 customers whose ages reported below: 87 58 54 61 3 35 31 28 3 16 68 36 a) What are the mean, median, and mode of the data? b) What measure of central tendency would you use here? Why? c) Find the ve-number summary of the data. ??
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.
One of the great difficulties a small restaurant manager faces is to please
every customer who differs widely in age. On a randomly selected evening, this restaurant served 12 customers whose ages reported below:
87 58 54 61 3 35 31 28 3 16 68 36
a) What are the mean, median, and
b) What measure of
c) Find the ve-number summary of the data. ??
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