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Table 2-1 1 Annunciators and status
Annunciator
FUNC
Input Key
Æ
The
key is used to separate two numbers when using two-number functions or two-
variable statistics. The
ordered pairs, and evaluate any pending arithmetic operations, in which case the result is the
same as pressing
Swap Key
\«
Pressing
•
The last two numbers that you entered; for instance, to change the order of division or subtraction.
•
The results of functions that return two values.
«
The
key toggles the item in the
mathematical stack. This function is used to retrieve a secondary value returned during a
calculation, as well as to swap two items during a calculation.
Statistics Keys
The statistics keys are used to access summary statistics from the statistics memory registers.
]
When you press
with the next keystroke.
For example, press
32
Getting Started
Status
A math error has occurred (for example, division by zero).
Æ
key can also be used to enter cash flows and cash flow counts,
4
.
exchanges the following:
Æ
followed by a statistics key, you can recall one of six summary statistics
]
followed by the
Table 2-12 Statistics keys
Keys
]l
]i
]f
][
register, or swaps the top two items in the
X
key to recall the sum of the x-values entered.
Description
Sum of the squares of the x-
values.
Sum of the squares of the y-
values.
Sum of the products of the x- and
y-values.
Number of data points entered.
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