The following reading were recorded by testing measurement 1 2 No. of Reading Reading values(V) | 12.2| 12.3| 12.4 | 12.5 12.6 | 12.7 12.9| 13 4 5 3 2 1 Calculate: 1- Arithmetic means 3- The standard deviation 4- Precision for (12.3) reading 2- The average deviation 5- Draw Histogram for above reading
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.
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