Question

D. A student completed 20 courses in the School of Arts and Sciences. Her grades in the 20 courses are shown below.

A B A B C

C C B B B

B A B B B

C B C B A

a. Develop a frequency distribution and a bar chart for her grades.

b. Develop a relative frequency distribution for her grades and construct a pie chart.

E. The SAT scores of a sample of business school students and their genders are shown below.

gender	less than 20	20 up to 25	25 and more	total
female	24	168	84	240
male	40	96	24	160
Total	64	264	72	400

a. How many students scored less than 20?

b. How many students were female?

c. Of the male students, how many scored 25 or more?

d. Compute row percentages and comment on any relationship that may exist between SAT scores and gender of the individuals.

e. Compute column percentages and comment on any relationship that may exist between SAT scores and gender of the individuals.

F.. A researcher has collected the following sample data

5 12 6 8 5

6 7 5 12 4

a) Provide a 5-number summary and determine if there are outliers

Answer 1

D

(a )

CLASS	FREQ
A	4
B	11
C	5
TOTAL	20

( b )

CLASS	FREQ	REL .FREQ
A	4	0.2
B	11	0.55
C	5	0.25
TOTAL	20	1