calculate the mean and standard deviation and create a standard bell curve using the scores in Table

<insert bell curve>

PART 2: Grades on a Bell Curve

Using the above bell curve, identify the letter categories A, B, C, D, F; calculate each student's letter grade, and add to column three below.

PART 3: Grades Using Percentages

Instead of using the bell curve, now calculate the traditional percentile for each student's score. Add the percent correct, out of 50 possible, to column four below.

PART 4: Letter Grades

Using the percentage scores, identify the letter grade from the grading scale below, and add it to column five.

Grading Scale

A=92-100% B=84-91% C=76-83% D=68-75% F=67% or below

Part 1 Part 1 Part II Part III Letter Grade %

Students Scores Grade based on Standard Grade using %

Deviation (Bell Curve) correct