Calculate ¯xx¯ (x-bar) for the data shown, to two decimal places x 13.2 22.2 22 10.2 20.3 20.4 26.9 1.3 12.7 20.7
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.
Calculate ¯xx¯ (x-bar) for the data shown, to two decimal places
| x |
|---|
| 13.2 |
| 22.2 |
| 22 |
| 10.2 |
| 20.3 |
| 20.4 |
| 26.9 |
| 1.3 |
| 12.7 |
| 20.7 |
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