1. how many planned to only grade papers? 2. How many planned to grade papers or do household chores? 3. How many did not plan to do any of these activities?
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.
278 faculty members were surveyed regarding plans for upcoming weekend. The results are:
135 plan to grade papers. 118 plan to attend the football game. 110 plan to do household chores. 29 plan to grade papers and attend the football game. 64 plan to grade papers and do household chores. 37 plan to attend the football game and do household chores. 13 plan to grade papers, attend the game, and do chores.
1. how many planned to only grade papers?
2. How many planned to grade papers or do household chores?
3. How many did not plan to do any of these activities?
4. how many planned to do at least 2 of these activities?
5. how many planned to attend the football game and do chores, but did not grade?
6. How many planned to attend the game or grade papers, but did not plan to do household chores?
7. How many planned to do at most one of these activities?
8. How many didn't do anything?
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