A professor administered an exam to twenty-five students. Their test scores are below. 100 70 66 54 70 61 53 95 100 68 65 67 77 77 53 52 77 54 78 72 59 77 88 55 64 find the mean, median, and range of the set of numbers. Then, use Excel to create a frequency table and a histogram of the test scores. Make sure to label your tables and graphs appropriately
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.
- A professor administered an exam to twenty-five students. Their test scores are below.
100 70 66 54 70 61 53 95 100 68 65 67 77 77 53 52 77 54 78 72 59 77 88 55 64
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