Dependent variable is DO,

25 independent variables, 6 Cases.

Variable

Coefficient

Variable

Coefficient

Intercept
TEMPERATURE
COLOUR
pH
TRRBIDITY
BOD
COD
CONDUCTIVITY
ALKALINITY
TS
TSS
TDS
CHLORIDE

9.6259766
.4935913
-.2397308
.5554199
-.2132874
.1563416
02528019
-15.96021
.104413
.0294876
.4076538
-.0119228
.0416107

RESI.CHLORINE
PHOSPHATE
NITRATE
AMMONIA
TH
TEMP. HARD
PERM. HARD
Ca HARDNESS
Mg HARDNESS
FLUORIDE
IRON
Ca CONTENT
Mg CONTENT

16.820313
-1.711731
.4920654
-14.97168
-.008172
-.0277519
.0210648
.0290823
.0430527
-3.734375
-1.878845
-.0204894
.6856232

R-Square = 0.0
Adjusted R-Squre = 1.25
Cohen’s f-square = 0.0, a small effect size
Analysis of variance to Test Regression Relation

Source

Sum of Sqa

df

Mean Sq

F

p-value

Regression
Error

2547.0231
-2546.369

25
-20

101.88092
.

.

N.A.

Total

.65415

5

 

 

 

Note: - A low p-value suggests that the dependent variable DO may be linearly related to independent variable (s)
Table 4: Multiple Regression Analysis for different Parameters in the Lake water Samples of Sagar city.