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Determining the highest rated item within a set of questions involves creating a variable that examines the responses of each respondent, and identifies the question…

In market research, you may end up with a data file that contains duplicate records. This post will show you how to identify and remove duplicates in your surve...

Sometimes researchers don’t have a time-date variable, but rather, just an indication of the period in a categorical variable. This can be problematic if ther...

It can sometimes be useful to calculate the amount of time, be it in minutes, hours, or even seconds, between two points in time.  In…

There are occasions when you have collected more records than necessary for a survey and you want to randomly remove the surplus or you simply…

Missing values in a data set are “blank” values. They are normally associated with survey skips. Those who skip a variable/question receive a missing value.…

Q has a terrific feature whereby it can automatically compare statistics against the previous period (of time). This is great for tracking scenarios, when you…

String splitting is the process of breaking up a text string in a systematic way, so that the individual parts of the text can be…

Timestamps are common in survey data. Sometimes we need calculate the difference between two timestamps. To do so, we need to convert them from being…

It's easier than you think to create new variables with JavaScript. We'll show you how to create, combine, split and transform your data into new variables.

There are some situations when your survey data file may contain duplicate values in your record identifier field. This can occur, for example, when some…