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Variance and Standard Deviation
calculate_variance_and_std( raw_data, categorical_columns, weights_column, debt_column )
a data set of credibility.
categorical column of data set.
weights column of data set.
credit dept column of data set.
variance and sd.
# NOT RUN { raw_data <- debt categorical_columns <- c(1,2) weights_column <- 3 debt_column <- 4 calculate_variance_and_std(raw_data, categorical_columns, weights_column, debt_column) # }
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