Fifty matched pairs of magnitude/depth measurements randomly selected from 10,594 earthquakes recorded in one year from a location in southern California. Find the best predicted depth of an earthquake with a magnitude of
1.3
Use a significance level of
0.05
Mag Depth
1.74 2.1
2.75 14.6
2.21 13.4
2.06 3.9
2.42 13.7
0.99 17.4
1.03 4.7
1.81 4.8
2.83 15.2
0.45 17.2
2.67 18.3
2.61 8.3
0.87 4.1
1.32 9.1
1.66 15.7
1.38 19.3
1.13 9.4
0.94 15.3
0.54 2.7
2.15 18.4
2.79 19.1
0.18 9.3
1.76 2.1
0.94 14.6
2.86 3.2
2.88 3.3
1.27 3.3
2.98 19.6
1.47 8.4
1.64 13.8
1.16 19.1
2.78 11.9
1.38 6.8
1.65 11.7
1.21 14.3
1.93 7.3
1.54 8.4
2.91 18.2
0.92 11.9
1.44 10.8
1.96 8.4
2.58 6.3
2.97 10.3
1.83 12.3
2.87 7.4
0.89 15.4
0.03 12.7
2.62 17.2
2.98 19.9
0.67 6.9
Applying regression on above data with data analysis tool of excel:
Coefficients | Standard Error | t Stat | P-value | |
Intercept | 9.5808 | 1.8336 | 5.2252 | 0.0000 |
Mag | 0.9302 | 0.9371 | 0.9926 | 0.3259 |
since p value >0.05 level regression is not significant:
best predicted depth of an earthquake with a magnitude of 1.3 =average value of all depth
= 11.23
Fifty matched pairs of magnitude/depth measurements randomly selected from 10,594 earthquakes recorded in one year from...
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