Texas Instruments TINSPIRE Manual Book page 561

Data examples
Entry
1.234
"Green"
=a3*length
Typing a math expression, text, or spreadsheet formula
1. Double-click the cell to select it and put it in edit mode.
Note: If the cell is already selected, you can press
entry line.
2. Type the expression, text, or formula. Be sure to enclose text entries in
quotes and start formula entries with an "=" symbol.
As you enter the data, it appears in the cell and on the entry line
simultaneously.
·
3. Press to complete the entry and move down to the next cell.
– or –
e
Press to complete the entry and move right to the next cell.
The Lists & Spreadsheet application automatically recalculates any
cells that are dependent on the cell you entered. If you have shared
the cell, and other TI-Nspire™ applications are linked to the cell, the
other applications are also updated.
Note: Empty cells in a spreadsheet display as a void represented by an
underscore (_). The underscore is automatically added to empty cells
when a list is named or when an empty cell is referenced in a formula.
When you plan to perform calculations on a range of cells, be sure to
notice the location of void cells. Cells without a value can affect
calculations. For example, if you include a void cell in the range for a
sum such as "=b2+c2," the result of the calculation is void (_).
Remarks
Simple numeric entry
Text - Enclose categorical data (such as the names of
colors used in a study) within quotes to distinguish
them from variable names. On the Handheld, press
/ r
to enter quoted data.
Formula - Consists of an "=" symbol followed by an
expression.
You can type the expression or use the Catalog and
expression templates to build it. For details, see the
Calculator section.
To ensure a decimal result instead of a fraction,
type one of the integers in the expression as a
decimal. For example, type instead of
1.0 1
·
Using Lists & Spreadsheet
.
or click the
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