QS:Numbers only

仅数字 (numbers_only)

说明

如果你启用了该选项，参与者就只能在文本框里输入数字。

对于 方程式问题类型, 这个设置明确了结果只能是数字，不是字符串。这将保证在有关小数点的后续方程式中进行正确的计算/转换。

Behavior by question type

1. Default: If the subject enters a value that is not a number, that value is immediately cleared from the text box so that the subject can enter an appropriate value.
2. Array (Texts): If the numbers only option is disabled, the "Show totals for" and "Show grand total" options will be overruled, while the total text boxes will not be displayed.
3. Equation: Enabling this option will force the equation results to be converted to a numeric value. If the equation result is not a number (and not blank), the equation will return NaN, being saved as an empty string in the response table.

Available options

• On
• Off (default)