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bcaffo
Course materials for the Data Science Specialization: https://www.coursera.org/specialization/jhudatascience/1
Important detail (negative sign) for the average difference from followup - baseline: -3 kg/m2 instead of just 3 kg/m2. Fixed a typo in Homework 4 (8/14): "purchaces"->"purchases".
x1 and x2 variables were changed to g1 and g2 variables in a line 2 of the following code chunk to make it work: ## Mistakenly treating the sleep data...
In formulas the term X_{ik} is changed to X_{ki}. Example: Y_i = \beta_1 X_{1i} + \beta_2 X_{2i} + \ldots + \beta_{p} X_{pi} + \epsilon_{i} = \sum_{k=1}^p X_{ik} \beta_j + \epsilon_{i}...
