From the data below find Mean, Variance, and Standard Deviation. X Y 120 0.45 130 0.30 140 0.15 150 0.10
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.
From the data below find Mean, Variance, and Standard Deviation.
| X | Y |
| 120 | 0.45 |
| 130 | 0.30 |
| 140 | 0.15 |
| 150 | 0.10 |
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