Hazardous waste: Following is a list of the number of hazardous waste sites in a sample of states of the United States in a recent year. The list has been sorted into numerical order. 356 11 13 14 14 14 15 16 19 20 21 25 26 29 30 32 32 32 38 40 48 49 49 52 67 86 97 116 Source: U.S. Environmental Protection Agency Send data to Excel Part 1 of 2 th (a) What is the 36 percentilez th The 36 percentile is Part 2 of 2 th (b) What is the 79 percentile? th The 79 percentile is
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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