Top Posters
Since Sunday
C
11
p
9
9
8
r
8
m
8
d
7
e
7
d
7
C
7
6
l
6
New Topic  
wrote...
Posts: 213
Rep: 9 0
2 weeks ago
Here is a scatterplot of weight versus height for students in an introductory statistics class. The men are coded as ‘1’ and appear as circles in the scatterplot; the women are coded as ‘2’ and appear as squares in the scatterplot.

a. Do you think there is a clear pattern? Describe the association between weight and height.
b. Comment on any differences you see between men and women in the plot.
c. Do you think a linear model from the set of all data could accurately predict the weight of a student with height 70 inches? Explain.
Textbook 

Stats: Modeling the World


Edition: 4th
Authors:
Read 42 times
2 Replies
Replies
Answer verified by a subject expert
wrote...
Posts: 254
2 weeks ago
Sign in or Sign up in seconds to unlock everything.
a. There is a moderately strong, positive association between weight and height. The variation in weight is larger for larger values of height.
b. Men, on average, appear to be taller and heavier than women. We can clearly see two groups (with some overlap) in this scatterplot.
c. Since there appears to be a difference between men and women in the plot, it is not correct to use a single model obtained by these data to make a prediction. Furthermore, there appears to be a great deal of scatter at 70”, with weights varying by over 50 pounds for women and well over 100 pounds for men.
This verified answer contains over 100 words.
1

Related Topics

wrote...
2 weeks ago
Smart ... Thanks!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  227 People Browsing
 139 Signed Up Today
Your Opinion
What's your favorite coffee beverage?
Votes: 67

Related Images
 421
 476
 92