a.In a separate document, create two columns to compare the totscores (total scores) and the tot_tscores (total t-scores). Please use the following grade breakdown to rank the assignment grade scores 1 through 12, where 1 is the highest score A, and 12 the lowest score F:

a.A to rank 1

b.B to rank 2

c.B- to rank 3

d.C+ to rank 4

e.C to ranks 5, 6, 7, and 8

f.C- to rank 9

g.D+ to rank 10

h.D to rank 11

i.F to rank 12

b.Answer questions 7 through 13

1.Determine what is unusual about student 1's performances on the tests.

2.What is strange about student 2's performances? How do the performances of these two students differ, and how are they the same?

3.What grades would be assigned to these two students if the total of the raw scores were used to determine grades?

4.What grades would be assigned to these two students if the total of the t-scores were used to determine grades?

5.Why are your answers to questions 9 and 10 different? (Hint: examine the variability of the tests)

6.What are the means and the standard deviations the four z scores distributions, to one decimal point?

7.What are the means and standard deviations of the four t-score distributions, to one decimal point?