206 Appendix A: Error Conditions
c or p, where:
x or y is noninteger;
x < 0 or y < 0;
x > y; or
x or y ≥ 10
10
.
Error 1
: Improper Matrix Operation
Applying an operation other than a matrix operation to a matrix, that is,
attempting a nonmatrix operation while a matrix is in the relevant
register (whether the X- or Y-register or a storage register).
Error 2
: Improper Statistics Operation
’ n = 0
S n ≤ 1
j n ≤ 1
L n ≤ 1
Error 2
is also displayed if division by zero or the square root of a negative
number would be required during computation with any of the following
formulas:
=
n
=
n
s
x
=
M
n
n − 1
s
y
=
N
n
n − 1
r
=
P
M
N
A
=
P
M
B =
M
Σy − P
Σx
n
M
ŷ
=
M
Σy + P
n
x − Σx
n
M
where:
M = nΣx
2
− (Σx)
2
N = nΣy
2
− (Σy)
2
P = nΣxy − ΣxΣy
(A and B are the values returned by
the operation L, where y = Ax + B.)
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