2- Calculate the test-retest reliability of the following set of scores: (hint compute the Pearson product-moment correlation) ID Time 1 Time 2 1 72 76 2 54 43 3 86 92 4 92 94 5 99 87 6 43 69 7 76 43 8 84 92
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.
2- Calculate the test-retest reliability of the following set of scores: (hint compute the Pearson product-moment
ID Time 1 Time 2
1 72 76
2 54 43
3 86 92
4 92 94
5 99 87
6 43 69
7 76 43
8 84 92
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