Last school year, the student body of a local university consisted of 35% freshmen, 25 % sophomores. 24% juniors, and 16% seniors. A sample of 300 students taken from this year's student body was taken to determine if there had been a significant change in % of students for each classification for this year as compared to last year. This analysis is an example of a O Regression O Goodness of Fit O Analysis of Variance O Test of Independence
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.
![Last school year, the student body of a local university consisted of 35% freshmen, 25% sophomores, 24%
juniors, and 16% seniors. A sample of 300 students taken from this year's student body was taken to determine if
there had been a significant change in % of students for each classification for this year as compared to last
year. This analysis is an example of a
Regression
O Goodness of Fit
Analysis of Variance
Test of Independence](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F85cffe67-604e-45c0-92a3-583cd0262e26%2F6ea9bbca-0112-44ae-9fbf-1465c1a0b817%2F15xvg5o_processed.jpeg&w=3840&q=75)
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