You can add limits and validations to your numerical questions to ensure data quality. Here are the different validations and how to add them.
Collect lets you add limits to the numerical questions present within your survey form. These limits let you control the basic quality of your numerical data by stopping errors at input. In this article, we will discuss the different kinds of limits you can add and how to do that.
Kinds of Limits for Numerical Questions
1. Value based limits: If you have an idea of the maximum and minimum value that the response to a numerical question can take, you can add those limits.
For example, if you are asking school children for their age, you can limit the response from 5 to 18.
2. Digit based limits: You can also set digit based validations, that is, you can limit how many digits are allowed in a numerical response.
For example, if you are surveying people and are asking them for their SSN number, you can limit the response to 9 digits.
3. Allow decimal numbers: You can choose whether your respondents can answer in decimal numbers. This can help prevent unintentional data entry errors.
For example, you may want to include decimals for questions about the land area but not age.
Adding Limits to Numerical Questions
Step 1. First, go to your form and select the numerical question that you want to add limits to.
Step 2. Adding limits:
1. Value-based limits: Go to the question and add the upper limit and lower limit for the value in the range boxes you can see. It will look like the image below.
2. Digit-based limits: Select "digit-based limitation". Next, add the upper limit and lower limit for the digits in the range boxes you can see. It will look like the image below.
3. Allow decimal numbers: You can enable this by selecting the check-box. It will look like the image below.
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