The data below is 12 observations of Math SAT scores (x) and scores on Math placement test (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. X Y 550 606 500 536 420 498 590 668 510 429 430 494 520 559 440 367 540 613 450 472 560 496 490 568
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.
| X | Y |
|---|---|
| 550 | 606 |
| 500 | 536 |
| 420 | 498 |
| 590 | 668 |
| 510 | 429 |
| 430 | 494 |
| 520 | 559 |
| 440 | 367 |
| 540 | 613 |
| 450 | 472 |
| 560 | 496 |
| 490 | 568 |
r=
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