KING'S IT WORLD
please register to watch content in detail
THANKS
ADMIN KINGSIT WORLD

KING'S IT WORLD


 
HomeHome  CalendarCalendar  GalleryGallery  FAQFAQ  SearchSearch  UsergroupsUsergroups  RegisterRegister  Log inLog in  
Search
 
 

Display results as :
 
Rechercher Advanced Search
kings it world text ad
KINGSITWORLD CALENDAR
Follow me on G+
KINGSITWORLD WEATHER
Latest topics
» QURAN MAJEED KE TAFSEER
Mon Aug 20, 2012 2:59 am by YOUSUFHALI

» PHY301 CIRCUIT THEORY REFERENCE BOOK
Wed Jul 25, 2012 11:36 am by shabbir1915

» MTH202 ASSIGNMENT NO 3 SOLUVED
Mon Jun 11, 2012 9:51 am by jaffarhussain

» Retrieve the DTC In the Jewel Module of 1995 Ford
Thu May 31, 2012 11:51 am by obd2tool

» How you can Obvious the Check Engine Light on the
Thu May 31, 2012 11:43 am by obd2tool

» send free sms and send free sms update on facebook
Tue May 15, 2012 8:33 pm by rizwan269

» United Bank Limited (UBL) - Fee Deposit
Thu May 10, 2012 3:33 pm by irumnaz

» PHOTO MIXER SOFTWARE
Fri Apr 20, 2012 10:02 am by sacredwkb

» Entrepreneurship Survey
Thu Mar 08, 2012 2:20 pm by Admin

» Fall 2011 Semester Result Announced
Thu Mar 08, 2012 2:19 pm by Admin

Navigation
 Portal
 Index
 Memberlist
 Profile
 FAQ
 Search
kings it world text ad
Social bookmarking
Social bookmarking delicious  Social bookmarking reddit  Social bookmarking stumbleupon  Social bookmarking slashdot  Social bookmarking yahoo  Social bookmarking google  Social bookmarking blogmarks  Social bookmarking live      

Bookmark and share the address of KING'S IT WORLD on your social bookmarking website

Bookmark and share the address of KING'S IT WORLD on your social bookmarking website
visitors counter
Powered by website analytics technology.
Keywords
kings it world text ad
FLAG COUNTER
free counters
LIVE TRAFFIC

Share | 
 

 sta301 gdb solution

View previous topic View next topic Go down 
AuthorMessage
Admin
Admin
avatar

Scorpio
Posts : 638
Points : 2155
Reputation : 19
Join date : 2010-05-15
Age : 30
Location : islamabad

PostSubject: sta301 gdb solution   Tue Jul 13, 2010 1:29 pm

If coefficient of correlation, “r” between two variables is zero, does it mean that there is no relationship between the variables? Justify your answer”.
Solution:
A correlation coefficient of 0 means that there is no linear relationship between the variables. A correlation coefficient is a number between -1 and 1 which measures the degree to which two variables are linearly related. If there is perfect linear relationship with positive slope between the two variables, we have a correlation coefficient of 1; if there is positive correlation, whenever one variable has a high (low) value, so does the other. If there is a perfect linear relationship with negative slope between the two variables, we have a correlation coefficient of -1; if there is negative correlation, whenever one variable has a high (low) value; the other has a low (high) value. A correlation coefficient of 0 means that there is no linear relationship between the variables.
If we are interested only in measuring the association between the two variables, then Pearson’s Correlation Coefficient (r) gives us an estimate of the strength of the linear association between two numerical variables.

OR
Solution:
The correlation coefficient has the following properties:
For any data set, r lies between -1 and +1.
If r = +1, or -1, the linear relationship is perfect, that is, all the points lie exactly on a straight line. If r = +1, variable y increases as x increases (i.e., the line slopes upwards). If r = -1, variable y decreases as x increases (i.e., the line slopes downward).
If r = 0, there is no linear relationship between y and x. This may mean that there is no relationship at all between the two variables (i.e., knowing x tells us nothing about the value of y). (See Diagram e.) However, we could also obtain r = 0 if there were a curved relationship between y and x. (See Diagram f.)
A useful interpretation of r is that its square (r2) measures the proportion of the variability in variable b, accounted for by the linear relationship with variable x.


Back to top Go down
View user profile
 
sta301 gdb solution
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» Astrometric Solution for HD 196885 Ab
» Chihod: partnership government failed to provide services to citizens and the majority solution
» solution of test paper
» Pathfinder Testbed
» about BAC pls help?

Permissions in this forum:You cannot reply to topics in this forum
KING'S IT WORLD :: EDUCATION :: GDB-
Jump to: