1. Which Big Data analysis technique involves the examination of previously collected data sets in an attempt to discover patterns and other knowledge hidden within the data? a. Data Mining b. ReCAPTCHA c. Crowdsourcing d. Screen Scraping 2. An infographic displays the relative frequencies of the 100 most common emoji used in text messaging for each of the last 12 months. Which of the following conclusions cannot be drawn from such a representation of emoji usage? a. You can determine the growth or decline in popularity of a particular emoji. b. You can determine what percentage of text messages contains a particular emoji. c. You can determine how long the most popular emoji has held the #1 position. d. You can determine the average age of emoji users based on emoji use. 3. Which of the following is NOT a benefit of making digital information and scientific databases openly available across the internet? a. Innovations in medicine, business and science can be developed from the increased knowledge gained from large data sets. b. Inaccurate and misleading data can be more easily disseminated to scientific researchers. c. Scientific researchers can more easily share data and collaborate on related research projects. d. Data scientists can discover previously unnoticed trends and patterns hidden within large data sets.