This is the description of the variable names in the data : CRIM: per capita crime rate by town . ZN: proportion of residential land zoned for lots over 25,000 sq.ft. . INDUS: proportion of non-retail business acres per town . CHAS: Charles River dummy variable (= 1 if tract bounds river; 0 otherwise) . NOX: nitric oxides concentration (parts per 10 million) . RM: average number of rooms per dwelling . AGE: proportion of owner-occupied units built prior to 1940 . DIS: weighted distances to five Boston employment centers . RAD: index of accessibility to radial highways . TAX: full-value property-tax rate per $10,000 . PTRATIO: pupil-teacher ratio by town . LSTAT: % lower status of the population . MEDV: Median value of owner-occupied homes in $1000’s I need to compute the mean, median, standard deviation, minimum, maximum values of medv for each combination of chas and rad (e.g. mean of chas=0 and rad=1). Using proc format and format (inside the procedure for obtaining the summary statistics), print out strings for chas (‘Bounds river’ and ‘Otherwise’ rather than 1 and 0). Which combination of two group variables has the highest mean?
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