Prepared by Dr. Agatha Shaw, Valencia College, 9/19/2007
http://faculty.valencia.cc.fl.us/ashaw
QUICK REVIEW: CLAST SKILL III.D.1
Infer relations and make accurate predictions from studying statistical data
1. The table below shows some bulk purchase rates for wild rice of a whole food store.
Weight (pounds) Rate ($ per pound)
0.0 – 1.0 2.89
1.1 – 2.0 2.69
2.1 – 5.0 2.29
5.1 – 10.0 2.09
10.0 above 1.99
Based on the rates shown in the table, how much does it cost a customer to purchase 4.0 pounds of
wild rice?
a) $9.16 b) $10.76 c) $8.36 d) $11.56
2. The scatter plot below represents the relationship between the student’s mid-term exam’s score and
final exam’s score in a humanities class.
0
20
40
60
80
100
120
0
20
40
60
80
100 120
Mid-Term's Score
Which of the following best describe the relationship between the student’s mid-term exam’s
score and final exam’s score?
a) There is a positive association between the student’s mid-term exam’s score and final
exam’s score.
b) There is a negative association between the student’s mid-term exam’s score and final
exam’s score.
c) Low final exam’s score tend to cause low mid-term exam score.
d) Students with low mid-term’s score tend to have high final exam’s score.
