Exam (elaborations)
Elementary Statistics (STATs 2023) Module 6 Test with 1)0% Correct verified Solutions
- Course
- Elementary Statistics
- Institution
- St. Petersburg College
Elementary Statistics (STATs 2023)
[Show more]
Content preview
Module 6 Test (solutions)Use the scatter diagrams shown, labeled a through f to solve the problem.
ln which scatter diagram is r = 0.01?
1.
f=,o, %3*\
H, tf,
a- ,^[ w€"K
to I{t or Ftcn -{.:r :tk'lf
B s
Itnaar as*aafin7
6 6
4 4
IX3456x lx3456x
l3 oa t1
taol
IG a IO
I $
f s
4 !+
,|
2
t23456x I 2 3 4 5 S 7r'
I? l2
t0 lfi
I I
f 6
4 ,N
,l 2
I 3 3 4 5 6 ?E It3456x
a)e
b)d
c) f
d)c
, ldentify the correlation coefficient.
Which correlation coefficient best describes the relation depicted in the scatter-plot?
Lr"sg #n, & cc'vrc-LIln^.-
Cor$tuu** y:.a.s+'ur'<3 )'t6t') g\6ac--
t3,{ pi''nrt-s a^-L + 14- Us+ -fl
se#
lr,* . 5'A'- *a';5 A"fu
dtsottt e+ * n2A4'h"4-
lr<nA"'
a) -0.7
wL cat" 5\y +&r^4 &+PFcPri
b) -0.1 *o L ^ 7'1"- 6tr"-'2- r
c)0 nrSu;\'
t\e34hvt- cdY'fe'la'hc'"'-
d) 0.1
e) 0.7
Select the most appropriate response.
E-' Given the length of a human's femur, x, and the length of a human's humerus, y, would you expect a
positive correlation, a negative correlation, or no correlation?
a) negativecorrelation T wtul4 e:tVctt y /r'2"t tdu*l
rcbut" 6
6x
b) positivecorrelation Nntkt tccur lrvrlL ry t'.
c) no correlation
Determine the linear correlation coefficient.
L^ ln an area of the Great Plains, records were kept on the relationship between the rainfall (in inches)
and the yield of wheat (bushels per acre). Calculate the linear correlation coefficient.
rr.r ?.2 | l{e
12-3
5r8 i5
117.7
| r8,J
5.9
7V.9 -iFl I
f ,\ rouq; hRh\ \cLov'nn\2^A' s '^6 fecl^'"o\t$ >
a) 0.981 *o ao\*Ir$3 $rr' car"<'tclrdrn'- coaffi cre vUl-
b) 0.998 (*-'+r- '+-+'1'^J,
c) 0.899
d) 0.900
Y= -leot
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller YourAssignmentHandlers. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now