The arithmetic average of a distribution of scores is the . The score that shows up most often is the . The score right in the middle of a distribution (half the scores above it; half below) is the . We determine how much scores vary around the average in a way that includes information about the of scores (difference between highest and lowest) by using the .

Mean, Mode, Median, Range, Standard Deviation.

Step-by-step explanation:

The completed sentences are as follows -

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.