A data set has Q1 = 10 and Q3 =15 An extreme outlier on the low side would have to be: lower than 2.5 between -5 and 2.5 lower than -5 higher than -5
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.
A data set has Q1 = 10 and Q3 =15
An extreme outlier on the low side would have to be:
- lower than 2.5
- between -5 and 2.5
- lower than -5
- higher than -5
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