a class of 30 nursing students took a test worth 100 points. the standard deviation of the score was 2.5 points. which of the following gives the most suitable interpretation? A. all the scores are 2.5 points apart B. the difference between the highest and lowest score is 2.5 points C. a typical score is within 2.5 points if the mean D. the mean is 2.5 2 suppose you have a distribution of students test scores on a very easy test. what measure of spread would you likely be best to describe this data? A. the IQR became it will likely be skewed to the left B. the IQR became the distribution will be symmetric C. the standard deviation because the distribution will likely be symmetric D. the standard deviation because the distribution will be skewed to the left
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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