From advanced nursing classes to courses in child development, the curriculum includes an array of both classroom-based and experiential courses that will provide the necessary knowledge and skills for working in pediatrics.
The Project Management Institute, however, endorses the accepted convention that a negative variance is a bad thing, and a positive variance a good thing. A variance is the difference between the projected budget and the actual performance for a particular account. A negative variance means that the budgeted amount was greater than the actual amount spent. A positive variance means that the budgeted amount was less than the actual amount spent. Note there is some debate over whether a negative variance means an underrun or an overrun.
Both the variance and the standard deviation meet these three criteria for normally-distributed (symmetric, bell-curve) data sets. The variance (Ï2) is a measure of how far each value in the data set is from the mean. Here is how it is defined: 1  Subtract the mean from each value in the data.