3. The following box plots show the distribution of test scores in MS. calculus. A period C period 50 60 70 80 90 100 score Based on these box plots, which one of the following statements must be true? A The first quartile for the two sections is the same B The lowest score in A period was close to the 15th percentıle of the C period class. C The mean score for students in C period was higher than the mean score for students in A
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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