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Statistical
modelling/Milk offtake
Multiplying the s.e. by 2 and adding to and subtracting,
respectively, from the mean, gives an approximate estimate of the 95% confidence
intervals (namely, -1.0160 to -0.6276 for LOCATION and -0.0849 to -0.0173 for
AGEC) within which the true difference between locations and the true slope are
expected to lie.
We can see that neither of the pairs of limits contain the
value zero, confirming that the data can be represented by separate lines with a
slope that is significantly different from zero.
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Response variate: TOTALM
Fitted terms: Constant + LOCATION + AGEC
*** Summary of analysis ***
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d.f. |
s.s. |
m.s. |
v.r. |
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Regression |
2 |
27.12 |
13.5612 |
40.08 |
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Residual |
161 |
54.47 |
0.3383 |
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Total |
163 |
81.60 |
0.5006 |
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Percentage variance accounted for 32.4
Standard error of observations is estimated to be 0.582
*** Estimates of parameters ***
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estimate |
s.e. |
t(161) |
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Constant |
2.136 |
0.112 |
19.14 |
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LOCATION 2 |
-0.8218 |
0.0971 |
-8.46 |
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AGEC |
-0.0511 |
0.0169 |
-3.02
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Parameters for factors are differences compared with the reference level:
Factor Reference level
LOCATION 1
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