A Wilcoxon summed rank has been conducted. A sample of ten observations has been selected o test the following hypotheses: Ho : m = 43.0 versus Hj : m > 43.0 Here are the data values: 35.9 27.0 29.5 39.1 53.6 42.5 44.2 51.1 49.2 37.2 Compute the value of the Wilcoxon summed rank statistic, W.
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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