Given the following pairs of (x, y) observations, com- pute the sample correlation. a. (2,5),(5,8), (3,7), (1,2), (8, 15) b. (7,5),(10,8), (8,7), (6,2), (13, 15) c. (12,4), (15,6), (16,5), (21,8), ( 14, 6) d. (2,8), (5, 12),(3,14),(1,9), (8, 22)
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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