Question

Please answer what’s required from the following question correctly.

The curve in the following diagram represents a traverse across the center of a roughly equidi- mensional ore body. The anomaly due to the ore body is obscured by a strong regional anoma- ly. Remove the regional anomaly and then evaluate the anomaly due to the ore body. which has a density contrast of 0.75 g/cm. (Graph values are supplied in the table following the graph.) 0.00 -0.25 0.50 -0.75 0.0 0.4 0.8 1.2 1.6 2.0 Horizontal position (km) Horizontal Position (km) 0.1 0.2 0.3 Bouguer Anomaly (mGal) 1.45 1.36 1.27 1.17 0.5 0.6 0.7 0.8 0.9 0.96 0.85 0.74 0.56 0.49 0.44 040 1.2 1.3 1.4 1.5 1.6 1.7 0.32 0.16 0.10 1.9

Answer 1

data

horizontal	anamoly
0.1	-1.45
0.2	-1.36
0.3	-1.27
0.4	-1.17
0.5	-1.07
0.6	-0.96
0.7	-0.85
0.8	-0.74
0.9	-0.64
1	-0.56
1.1	-0.49
1.2	-0.44
1.3	-0.4
1.4	-0.36
1.5	-0.32
1.6	-0.27
1.7	-0.22
1.8	-0.16
1.9	-0.1
2	-0.03

result from regression

SUMMARY OUTPUT
Regression Statistics
Multiple R	0.98432299
R Square	0.968891748
Adjusted R Square	0.967163512
Standard Error	0.080054232
Observations	20
ANOVA
	df	SS	MS	F	Significance F
Regression	1	3.592863759	3.592863759	560.6246123	5.13243E-15
Residual	18	0.115356241	0.00640868
Total	19	3.70822
	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%
Intercept	-1.414789474	0.037187709	-38.04454527	1.18732E-18	-1.492917951	-1.336660996
horizontal	0.735037594	0.0310437	23.6775128	5.13243E-15	0.669817201	0.800257987

y^= -1.4148 + 0.7350 *x

when x = 0.75

y^= -1.4148 + 0.7350 *0.75

= -0.8635

residual

= yi - y^

= (-0.85 - 0.74)/2 - (-0.8635)

= 0.0685