In a data set (about 150 entries) on the age of a student taking the SAT from the current year a person accidentally changes a value of 75 to 165. For each of the following determine if the value would stay the same, increase, or decrease in value. Assume the data collected should have had values between 18 to 75 before that error was made. Mean Median Standard Deviation
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.
In a data set (about 150 entries) on the age of a student taking the SAT from the current year a person accidentally changes a value of 75 to 165. For each of the following determine if the value would stay the same, increase, or decrease in value. Assume the data collected should have had values between 18 to 75 before that error was made.
- Mean
- Median
- Standard Deviation
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