If you were to test the Pearson correlation coefficient for significance, what would be the critical value of t (alpha=.05)?
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.
Suppose the researcher also expected a relationship between the IQ scores of fathers and their sons. Use the following IQ scores to test this theory.
| Family | Father | Son |
| 120 | 121 | |
| 110 | 105 | |
| 120 | 125 | |
| 92 | 87 | |
| 85 | 92 | |
| 72 | 90 | |
| 107 | 110 | |
| 115 | 122 | |
| 155 | 133 | |
| 90 | 123 |
If you were to test the Pearson
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