Below are some summary statistics from the score variable. Which of the following is true? min Q1 median Q3 max 69.5 standard deviation 200 mean 30 57 77 99 65.075 16.09361 (a) the standard deviation estimate is not possible because score is a whole number (b) there is evidence that the distribution of score is right-skewed (c) the minimum value of 30 would be identified as out outlier in a box plot (d) there were more survey respondents who reported job satisfaction scores less than 57 than survey respondents reported job satisfaction scores greater than 77 (e) none of the above are true
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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