The model equation suggested in the paper is y- -183.560 + 1.589x, + 0.069x, + e. (a) Based on this model, what is the mean value of y (in mg/L) when x, - 320 and x, - 2,7007 mg/L (b) Based on this model, what mean chloride concentration (in mg/L) is associated with a total alkalinity of 270 and an electrical conductivity of 2,9007 mo/l
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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