XI. Suppose a survey of 60 freshmen accounting students at the Main Campus of the Polytechnic University of the Philippines produced the following results: 19 of the students read Manila Bulletin Today 18 read Philippine Daily Inquirer 50 read Philippine Star 13 read Manila Bulletin Today and Philippine Daily Inquirer 11 read Philippine Daily Inquirer and Philippine Star 13 read Manila Bulletin Today and Philippine Star 9 read all three. 1. How many students read none of the publications? 2. How many read only Philippine Star? 3. How many read Manila Bulletin Today and Philippine Daily Inquirer, but not Philippine Star?
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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