We've been developing intuitive high-quality statistical software at an affordable price, backed up by fast friendly customer service for over 25 years...
Office hours: 9am-5pm GMT Mon-Fri
It's Tuesday 5:02 PM and the office is closed - e-mail us and we'll get back to you as soon as possible.
A variable is an attribute of an object. The value of a variable can vary from one
thing to another.
Record quantitative data as the numeric value.
Record qualitative data as a numeric coding (for example, 0, 1, 2) or labels (for example, Low, Medium, High). Numeric codings are often preferred as they succinctly represent the values and allow quicker data entry. However, codings can be difficult to understand by anyone other than the person who assigned them. To make their meaning clear, you can also assign a label to each numeric coding.
Data are ordered based on numeric value, numeric coding, or if a numeric coding is not used into alphabetical label order. For some statistical tests, the sort order determines how observations are rank-ordered and can affect the results. Often alphabetic sort order does represent the correct ordering. For example Low, Medium, High is sorted alphabetically into High, Low, Medium which does not represent their correct, natural order. In such cases, you must explicitly set the order before
analyzing the data.