For any Normal Distribution, approximately . of the observations fall within three standard deviations of the mean. 2.5% 95% 68% 99.7%
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.
![For any Normal Distribution, approximately
of the observations fall within three
standard deviations of the mean.
2.5%
95%
68%
99.7%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe922b0c9-fb69-46f8-973b-792901e731f8%2F1b207b6c-4514-4ca3-8e9e-ed9d94d9ace0%2Fwtqed6g_processed.png&w=3840&q=75)
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