cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bogor,
Jawa barat
INDONESIA
Forum Pasca Sarjana
Published by Institut Pertanian Bogor
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 1 Documents
 1 
Search results for , issue "Vol. 18 No. 2 (1995): Forum Pascasarjana" : 1 Documents clear
Covariance Analysis of Heterogenous Group Data Mohammad Masjkur; M. Sjarkani Musa; . Aunuddin; Oetit Koswara
Forum Pasca Sarjana Vol. 18 No. 2 (1995): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1184.994 KB)

Abstract

This paper discussed the important of concomitant variables in regression analysis. Particularly, it was shown that without considering concomitant variables none of the combined regression models was reliable. In fact, the highest coefficient of determination R' was obtained from Mediterran soil group of data (65.8%). although R' for each specimen varied from 72.8% to 97.7%. Considering K-soil contents as concomitant variables, it was shown that the coefficient of determination increased by 18 2% to 85.3%. The resulting R* for each model was ranging from 67.1% to 93.6%. Another important finding from the research was the incorporation of concomitant variables resulted in more symmetric data distributions, smaller variances, and substantial increase in the regression slopes.

Page 1 of 1 | Total Record : 1

 1 

Filter by Year

1995 1995


Reset
Filter By Issues
All Issue Vol. 35 No. 1 (2012): Forum Pascasarjana Vol. 34 No. 4 (2011): Forum Pascasarjana Vol. 34 No. 3 (2011): Forum Pascasarjana Vol. 34 No. 2 (2011): Forum Pascasarjana Vol. 34 No. 1 (2011): Forum Pascasarjana Vol. 33 No. 4 (2010): Forum Pascasarjana Vol. 33 No. 3 (2010): Forum Pascasarjana Vol. 33 No. 2 (2010): Forum Pascasarjana Vol. 33 No. 1 (2010): Forum Pascasarjana Vol. 32 No. 4 (2009): Forum Pascasarjana Vol. 32 No. 3 (2009): Forum Pascasarjana Vol. 32 No. 2 (2009): Forum Pascasarjana Vol. 32 No. 1 (2009): Forum Pascasarjana Vol. 31 No. 4 (2008): Forum Pascasarjana Vol. 31 No. 3 (2008): Forum Pascasarjana Vol. 31 No. 2 (2008): Forum Pascasarjana Vol. 31 No. 1 (2008): Forum Pascasarjana Vol. 30 No. 1 (2007): Forum Pascasarjana Vol. 25 No. 3 (2002): Forum Pascasarjana Vol. 25 No. 2 (2002): Forum Pascasarjana Vol. 20 No. 1 (1997): Forum Pascasarjana Vol. 18 No. 2 (1995): Forum Pascasarjana Vol. 18 No. 1 (1995): Forum Pascasarjana Vol. 16 No. 1 (1993): Forum Pascasarjana Vol. 14 No. 1 (1991): Forum Pascasarjana Vol. 13 No. 2 (1990): Forum Pascasarjana Vol. 12 No. 1 (1989): Forum Pascasarjana More Issue