I have a set/column of 60 numbers (percentages). They were generated

from a database program which generated them with an input value of 50

Some percentages are above 0, some are below 0. (The range is 5% to -23%.) The 60 numbers are on average 2.5% below 0 with a standard deviation of 4.85%.

How do I move the total set of percentages closer to 0? Do I need

to generate new percentages with, say, an input of 52.5 and 55 and so on

(increasing the input value by the current average precentage) and then somehow calibrate or slope the changes?

How should I even go about thinking about this problem? What type of

problem is it? It has been a long time since I've contemplated

curve-fitting and regression analysis, and I'm not even sure such

approaches apply to this problem.

Thank you.