Suppose I collect test data from two different tests, History and Calculus. Suppose the history test has a mean of 78 and a standard deviation of 8. The calculus test has a mean of 75 and a standard deviation of 10. Assume that the test scores are symmetric and unimodalWhat is the Z score for each class test?
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.
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 I collect test data from two different tests, History and Calculus. Suppose the history test has a
What is the Z score for each class test?