The National Football League (NFL) is an American sports league where 32 of the world's premier football teams compete against each other in a 16 game season. The frequency table shows the number of teams that finished the 2014 season with cach possible number of wins. Wins Frequency 1 2 3 6. 3. 4. 8. 2 9. 4 10 3 11 4. 14 15 16 2. 23 2. 4. %24
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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