{"blocks": [{"key": "563a628c", "text": "Scenario", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "c028241f", "text": "Studying whether attending college affects income using data from 1,000 Mountain View residents.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "62c79989", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "757eb21d", "text": "Is fitting a simple linear regression with a binary college variable appropriate? Discuss sampling bias, model validity, and propose better analytic alternatives.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "69af264d", "text": "Hints", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "fa2cdc90", "text": "Consider external validity and two-sample t-tests or multivariate models.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}