Bob earned grades 83, 88, 87, and 83. If nicholas scores a 90 on his last exam, which measure of central tendency will give him the highest...

Hi ibrohi!

The three main
measures of central tendency are mean, median, and mode.

1)
The mean, also referred to as the average, can be found by
adding together the scores of each exam, and then dividing by the number of exams
taken.

    83+88+87+83+90=
431

Then, dividing 431 by 5, we find that Bob's mean score
is 86.2

2) The
median of a set of data is the number that is literally in
the middle. If we order these five grades from lowest to highest, we can find the median
by recording the score that appears third.

    83, 83, 87,
88, 90         87 is the median of this
set.

3) The mode is the number that appears the
most often. A set may have no mode, or it may have more than one. In this case, only the
number 83 is repeated in the set and is, therefore, the
mode.

Therefore, the median would give Bob the
highest score.

Hope this
helped!

Heather