Question 14 The table below shows the midterm and final exam grades of ten students. 68 78 92 90 88 82 94 83 71 Final Exam 62 77 99 87 85 84 95 98 72 64 Midterm 62 Which comparison between the midterm grades and the final exam grades is true? o The final exam grades have a higher mean and standard deviation than the midterm grades. o The final exam grades have a lower mean and standard deviation than the midterm grades. o The final exam grades have a higher mean and a lower standard deviation than the midterm grades. o The final exam grades have a lower mean and a higher standard deviation than the midterm grades.
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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