Changes

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===Mobile surveys===

Mobile data collection or mobile surveys is an increasingly popular method of data collection. Over 50% of surveys today are opened on mobile devices.<ref>{{cite web |url = http://www.questback.com/online-customer-surveys |title = Mobile-ready. Event driven. Feature rich. Online customer surveys |publisher = [[QuestBack]] |archiveurl = https://www.webcitation.org/6cTYw0aQt?url=http://www.questback.com/online-customer-surveys |archivedate = 22 October 2015 |deadurl = no |df = }}</ref> The survey, form, app or collection tool is on a mobile device such as a smart phone or a tablet. These devices offer innovative ways to gather data, and eliminate the laborious "data entry" (of paper form data into a computer), which delays data analysis and understanding. By eliminating paper, mobile data collection can also dramatically reduce costs: one World Bank study in Guatemala found a 71% decrease in cost while using mobile data collection, compared to the previous paper-based approach.<ref>{{cite web|last1=Schuster|first1=Christian|last2=Perez Brito|first2=Carlos||url=http://home.magpi.com/case-study/evaluating-cash-transfers-in-guatemala/| title = Evaluating Cash Transfers in Guatemala |website=Magpi|accessdate=27 November 2016}}</ref>