A veterinarian keeps track of the types of animals treated by an animal clinic. The following distribution represents the percentages of animals the clinic has historically encountered. Animal type Dogs Cats Livestock Birds Other Percent 61% 22% 8% 6% 3% If the animal clinic treats 230 animals in a month, how many of each animal type would be expected? Animal type Dogs Cats Livestock Birds Other Еxреcted 61 22 6. Animal type Dogs Cats Livestock Birds Other Expected 122 44 16 12 6. Animal type Livestock Birds Other Dogs Cats Еxpected 140 51 18 14 Animal type Livestock Birds Other Dogs Cats Expected 46 46 46 46 46 Animal type Dogs Cats Livestock Birds Other Expected 140,3 50.6 18.4 13.8 6.9

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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.