Which measure of central tendency will give him the highest score (more info below)?Nicholas earned the following grades on his science exam:...

There are three measures of central tendency.
Mean, median, and mode.

The
mean is a typical average. You add up all the numbers then
divide by how many numbers you have. In this problem:

83 +
88+87+83+90=431 then

431 divided by 5 =
86.2

The
median is the middle number when all the numbers are put in
order. In this
problem:

83,83,87,88,90

There
are five numbers so the third one in from either side is the median, in this case
87.

The mode
is the number that appears most often in the group of numbers. In this
problem:

All of the numbers appear once, except 83, which
appears twice, therefore the mode is
83.

In this
problem Nicholas would be best off with the median because it gives
him the highest score (87).