how are the questions you can investigate with scatter or crosstab charts different from the ones you can investigate with bar charts or histograms

the only way i would see could be an autoclicker type software. but that is very time consuming.

answervisible;

the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.