I'm not sure what you mean Duncs? It soundsl like External and

Internal are single numbers and you want a horizontal line across at

the External level and a vertical one at the Internal level. They

will cross at the point (External, Internal) but that is obvious so

there must be more to the problem.

A bit more background would be helpful.

xt

xt, that's exactly it. On the Y-Axis will be External Score and the X-

Axis will be Internal Score. Whatever External is, a line will go

across at that point on Y-Axis. Likewise, for Internal, a line will

go up at that point on the X-Axis and will cross-over the External

line. The purpose is to identify the intersection point, so that a

baseline can be set. Once this baseline has been set, further plots

will be measured against it to see how near, or far, the intersection

of the two lines is.

My question was, given an External score of 67 and an internal one of

87, how would I plot that graph?

Duncs