A statistic center compiles data on the length of stay by patients in short-term hospitals. A random sample of 21 patients yielded the data on length o stay, in days, shown below. Complete parts (a) through (e) below. 25 2 5 9 3 21 55 23 23 7 23 5 6 1 7 25 5 23 13 17 23 D a. Obtain and interpret the quartiles. Q1 = Q2 Q3 OOD
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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