A B C D x-bar 85 60 40 80 S 5 10 3 5 X 85 70 49 70 This was an example given in class in relation to z-scores. The explanation was that each letter A-D is represenative of a student being grades Relative to a Recitation class. We were made aware that student C in this case would be the one with th highest grade. I do not understand z-scores or how they relate to the table at all.
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.
| A | B | C | D | |
| x-bar | 85 | 60 | 40 | 80 |
| S | 5 | 10 | 3 | 5 |
| X | 85 | 70 | 49 | 70 |
This was an example given in class in relation to z-scores. The explanation was that each letter A-D is represenative of a student being grades Relative to a Recitation class.
We were made aware that student C in this case would be the one with th highest grade. I do not understand z-scores or how they relate to the table at all.
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