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15
Select the correct answer.
What was the most common rating in the 26-35 age group?
OA Excellent
A movie producer conducted a survey after the screening of his movie to find
out how the film would be received by viewers from different age groups. The
columns in the two-way table indicate the numbers of viewers who rated the
film on a four-point scale: excellent, good, average, and poor.
OB. Good
OC. Average
Excellent Good Average Poor
Marginal
Totals
OD.
Poor
Viewer's Age
Group
16-25
52
42
12
7
113
OE both Average and Poor
33
26-35
50
5
9
97
36-45
58
12
28
34
132
Reset
46-55
25
17
22
12
76
56 and Above
12
5
3
8
28
Marginal Totals
180
126
70
70
446

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

go on the tube you might find some information there

practice. practice. practice.

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.