Public Health Degrees. Public health programs focus on protecting and improving the health of communities. Students in these programs learn to conduct disease-related research and analyze the effects of genetics and the environment on an individual's health.
What is a 'Z-Score'. A Z-score is a numerical measurement of a value's relationship to the mean in a group of values. If a Z-score is 0, it represents the score is identical to the mean score. Z-scores may also be positive or negative, with a positive value indicating the score is above the mean and a negative score indicating it is below the mean. Positive and negative scores also reveal the number of standard deviations the score is either above or below the mean.
For student 14 with a score of 50 which is almost 10 points above the mean, the z score is 1.42. This is almost one and a half Standard Deviation units above the Mean. This z score can be used to find where the student is in the distribution of scores around the mean.