Question

Students get two grades for a test in an introductory psychology course: a letter grade, and a numerical equivalent (weighted value). So an A is worth 4 points, a B is worth 3 points, a C is worth 2 points, a D is worth 1 point, and an F is worth O points. The results for the test are listed in the table below. Score Number of students 11 18 52 13 6 Using the numerical equivalents (weighted values), what is the average grade for this test? Rounded to the nearest hundredth, the average grade is

Answer 1

11+18+52+13+6=100 100/5=20 average is 20 points

Answer 2

Average grade for this test is 2.15 .

Explanation:

Formula

`Mean = (Sum\ of\ all\ observation)/(Total\ number\ of\ observation)`

As given

Students get two grades for a test in an introductory psychology course: a letter grade, and a numerical equivalent (weighted value).

Grade Points Student Score

A 4 11 44

B 3 18 54

C 2 52 104

D 1 13 13

F 0 6 0

Sum of total score = 44 + 54 + 104 + 13 + 0

= 215

Total number of the students = 11 + 18 + 52 + 13 + 6

= 100

Putting all the values in the mean formula

`Mean = (215)/(100)`

Mean = 2.15

Therefore average grade for this test is 2.15 .