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Biological field and laboratory methods for measuring the quality of ...

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BIOLOGICAL METHODS<br />

y<br />

POSITIVE INTERCEPT<br />

POSITIVE SLOPE<br />

'-----------X<br />

y<br />

ZERO INTERCEPT<br />

POS ITIVE SLOPE<br />

I'...---------X<br />

y<br />

NEGATIVE INTERCEPT<br />

NEGATIVE SLOPE<br />

I-----------X<br />

y<br />

POSITIVE INTERCEPT<br />

NEGATIVE SLOPE<br />

-----------X<br />

y<br />

NEGATIVE INTERCEPT<br />

POSITIVE SLOPE<br />

1---'7"-------X<br />

NOTE: A SLOPE OF ZERO IMPLIES<br />

NO RELATIONSHIP.<br />

Figure 6. Examples <strong>of</strong> straight-line graphs illustrating regression equations.<br />

22

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