A group of data items and their mean are given. 12, 20, 28, 48, 72, 108; Mean=48 A. Type the deviation from the mean for each of the data items. 12 20 28 48 72 108 ? ? ? ? ? ? B. The sum of the deviations in part (a) is ?
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.
12 | 20 | 28 | 48 | 72 | 108 |
? | ? | ? | ? | ? | ? |
B. The sum of the deviations in part (a) is ?
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