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- Which regression model (linear vs decision tree) has the lowest mean absolute error? Linear regression Decision treeFor below data points : a-) linear fit b-) 3rd order polynomial fit and c-) 20th order polynomial fit are given Which fitting is better ? Why ? How we can choose best fitting among these 3 alternatives ?Suppose that treatment Factor T has three levels and blocking Factor B has seven levels. What are the values of k and v for the q-curve for performing Tukey’s multiple-comparison procedure to determine which treatment means are different?
- How to draw a boxplot with the same minimum value and quartile 1?Small_sedan 55 57 57 55 49 Medium Sedan 61 61 56 65 57 64 Large Sedan 70 76 70 72 76 76 Suv 4WD 74 77 65 65 MiniVan 63 60 57 68 62 The table available below shows the costs per mile (in cents) for a sample of automobiles. At alphaαequals=0.01, can you conclude that at least one mean cost per mile is different from the others? Let muμSS, muμMS, muμLS, muμSUV and muμMV represent the mean costs per mile for small sedans, medium sedans, large sedans, SUV 4WDs, and minivans respectively. What are the hypotheses for this test? A. H0: muμSSnot equals≠muμMSnot equals≠muμLSnot equals≠muμSUVnot equals≠muμMV Ha: muμSSequals=muμMSequals=muμLSequals=muμSUVequals=muμMV B. H0: muμSSequals=muμMSequals=muμLSequals=muμSUVequals=muμMV Ha: muμSSnot equals≠muμMSnot equals≠muμLSnot equals≠muμSUVnot equals≠muμMV C. H0: Not all the means are equal. Ha: muμSSequals=muμMSequals=muμLSequals=muμSUVequals=muμMV D. H0:…The World Bank collects information on the fertility rate (children per woman) in the country and the life expectancy of a person (in years) in each country ('Life expectancy at,' 2013 and 'Fertility rate,' 2013). The data for 23 randomly selected countries for the year 2011 are in the table below. a) Since data were collected for variable(s), the correct graph to make is a .b) Make a scatterplot of X versus Y using technology. Use this graph to answer the part below. c) Which of the following is true about the relation between fertility rate and average life expectancy based on the graph above?
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