This is due to the fact that there is not enough insects flying around in the winter to support an active metabolism. If the hibernacula temperature is too warm, then they expend too much energy. If the temperature is too cold, then the bat colony will freeze in the cold winter months. Generally, this means that they need to snuggle up under insulation to get near the warm side of a ceiling or wall.
The mean is the average you're used to, where you add up all the numbers and then divide by the number of numbers. The median is the middle value in the list of numbers. To find the median, your numbers have to be listed in numerical order, so you may have to rewrite your list first. The mode is the value that occurs most often. If no number is repeated, then there is no mode for the list. The range is just the difference between the largest and smallest values.
geometry. 1  the branch of mathematics that deals with the deduction of the properties, measurement, and relationships of points, lines, angles, and figures in space from their defining conditions by means of certain assumed properties of space. any specific system of this that operates in accordance with a specific set of assumptions: Euclidean geometry.