Frequency Distribution Table of the scores of the grade 10 history achievement test.

X	F	CF	C%
80	1	30	100%
78	2	29	96.67%
70	1	27	90%
65	1	26	86.67%
64	2	25	83.33%
63	2	23	76.67%
61	2	21	70%
59	2	19	63.33%
58	5	17	56.67%
55	4	12	40%
53	2	8	26.67%
52	2	6	20%
49	2	4	13.33%
46	1	2	6.67%
40	1	1	3.33%

1. Based on thef-distribution table of raw scores grouped according to frequency above, find the:

Mean (3 pts)

Median (Hint: Use the formula in the course Study Guide.) (6 pts)

Mode (2 pts)

2. Based on thef-distribution table of raw scores grouped according to frequency above (this is the firstf-distribution table in Question 3, Part 1), find the following: (Hint: If you are unable to compute using this f-distribution table, you may do so by using the raw scores arranged in descending order.)

Range (2 pts)

Variance (Hint: Use the computational formula of SS.) (6 pts)

Standard deviation (2 pts)