Page 586 - Trends in Science and Technology fo Sustainable Living

Trends in Science and Technology 547
for Sustainable Living

Figure 6. Comparison of Sea Salt Yields in Cirebon and Indramayu

2. Multiple Linear Regression Analysis
The multiple linear regression analysis results (Table 5) show
that about 68% of salt production in Cirebon is determined by rainfall
(X ) and rainy days (X ) during the dry season, and other variables
1 2
determine the remaining 32%. The significance value of f is 0,0102
(below the alpha value of 0,05), meaning that the combination
of variations in rainfall and the number of rainy days significantly
determines the gain of salt production.

Table 5. Multiple Linear Regression Analysis for Rain-based Sea Salt
Harvest in Cirebon

Regression Statistics
Multiple R 0,825925
R Square 0,682153
Adjusted R Square 0,602691
Standard Error 90288,14
Observations 11

ANOVA
df SS MS F Significance F
Regression 2 1,4E+11 7E+10 8,584668 0,010206409
Residual 8 6,52E+10 8,15E+09
Total 10 2,05E+11