The foremost step in data science journey is to decide the domain of data analysis. Based on the domain that you choose, you must gather relevant data from different sources. Data gathering/collection is a technique to gather information from various sources to pull out significant information. Here, we will discuss about few techniques of data collection. 1. Collecting survey data - Such data can be collected by circulating questionnaire to the audience. This becomes handy if you want to limit the scope of analysis. For example, you want to find the age distribution and number of dependents in each household of your society.You can circulate the questionnaire to the residents asking them about their age and number of dependents and then draw an analysis from the data collected The drawbacks of this method is that it becomes a tedious process, the audience may not be interested in this drill and it also limits the collection of data Other examples of this method are : ...