{"action":"created","issue":{"url":"https://api.github.com/repos/ai-se/phaseDelay/issues/23","labels_url":"https://api.github.com/repos/ai-se/phaseDelay/issues/23/labels{/name}","comments_url":"https://api.github.com/repos/ai-se/phaseDelay/issues/23/comments","events_url":"https://api.github.com/repos/ai-se/phaseDelay/issues/23/events","html_url":"https://github.com/ai-se/phaseDelay/issues/23","id":98531688,"number":23,"title":"what is  \\bar{x} and \\tidle{x}?","user":{"login":"timm","id":29195,"avatar_url":"https://avatars.githubusercontent.com/u/29195?v=3","gravatar_id":"","url":"https://api.github.com/users/timm","html_url":"https://github.com/timm","followers_url":"https://api.github.com/users/timm/followers","following_url":"https://api.github.com/users/timm/following{/other_user}","gists_url":"https://api.github.com/users/timm/gists{/gist_id}","starred_url":"https://api.github.com/users/timm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timm/subscriptions","organizations_url":"https://api.github.com/users/timm/orgs","repos_url":"https://api.github.com/users/timm/repos","events_url":"https://api.github.com/users/timm/events{/privacy}","received_events_url":"https://api.github.com/users/timm/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"llayman","id":1862880,"avatar_url":"https://avatars.githubusercontent.com/u/1862880?v=3","gravatar_id":"","url":"https://api.github.com/users/llayman","html_url":"https://github.com/llayman","followers_url":"https://api.github.com/users/llayman/followers","following_url":"https://api.github.com/users/llayman/following{/other_user}","gists_url":"https://api.github.com/users/llayman/gists{/gist_id}","starred_url":"https://api.github.com/users/llayman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/llayman/subscriptions","organizations_url":"https://api.github.com/users/llayman/orgs","repos_url":"https://api.github.com/users/llayman/repos","events_url":"https://api.github.com/users/llayman/events{/privacy}","received_events_url":"https://api.github.com/users/llayman/received_events","type":"User","site_admin":false},"milestone":null,"comments":3,"created_at":"2015-08-01T11:45:49Z","updated_at":"2015-08-17T16:51:04Z","closed_at":null,"body":"mean and standard deviation?\r\n\r\n![image](https://cloud.githubusercontent.com/assets/29195/9021737/3b65e6ec-3821-11e5-8e63-ab60c30be041.png)\r\n"},"comment":{"url":"https://api.github.com/repos/ai-se/phaseDelay/issues/comments/131887401","html_url":"https://github.com/ai-se/phaseDelay/issues/23#issuecomment-131887401","issue_url":"https://api.github.com/repos/ai-se/phaseDelay/issues/23","id":131887401,"user":{"login":"WilliamNichols","id":7582292,"avatar_url":"https://avatars.githubusercontent.com/u/7582292?v=3","gravatar_id":"","url":"https://api.github.com/users/WilliamNichols","html_url":"https://github.com/WilliamNichols","followers_url":"https://api.github.com/users/WilliamNichols/followers","following_url":"https://api.github.com/users/WilliamNichols/following{/other_user}","gists_url":"https://api.github.com/users/WilliamNichols/gists{/gist_id}","starred_url":"https://api.github.com/users/WilliamNichols/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/WilliamNichols/subscriptions","organizations_url":"https://api.github.com/users/WilliamNichols/orgs","repos_url":"https://api.github.com/users/WilliamNichols/repos","events_url":"https://api.github.com/users/WilliamNichols/events{/privacy}","received_events_url":"https://api.github.com/users/WilliamNichols/received_events","type":"User","site_admin":false},"created_at":"2015-08-17T16:51:04Z","updated_at":"2015-08-17T16:51:04Z","body":"I worked with a guy who did survey instruments in Northwestern and Minnesota Poly Sci departments. He always recommended using medians and modes for Likert scale questions unless you aggregate a number of questions. That leaves some issues of scale, but  aggregating the ranked ordinals from different questions to create a ratio value was accepted.  Standard deviations with hard 1-5 bounds typically aren’t very helpful. Interquartile range or other non-parametric makes more mathematic sense.  It’s also important to be clear if the data is mounded or double peaked.\r\n\r\nFrom: Lucas Layman [mailto:notifications@github.com]\r\nSent: Monday, August 17, 2015 12:37 PM\r\nTo: ai-se/phaseDelay\r\nCc: William Nichols\r\nSubject: Re: [phaseDelay] what is \\bar{x} and \\tidle{x}? (#23)\r\n\r\n\r\nYes, they are means and standard deviations. Should I just use median?\r\n\r\n—\r\nReply to this email directly or view it on GitHub<https://github.com/ai-se/phaseDelay/issues/23#issuecomment-131883796>.\r\n"}}