datafu-pig/src/main/java/datafu/pig/stats/FloatVAR.java [116:166]:
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                    t.set(2, 1L);
                }
                return t;
            } catch(NumberFormatException nfe) {
                nfe.printStackTrace();
                // invalid input,
                // treat this input as null
                try {
                    t.set(0, null);
                    t.set(1, null);
                    t.set(2, 0L);
                } catch (ExecException e) {
                    throw e;
                }
                return t;
            } catch (ExecException ee) {
                ee.printStackTrace();
                throw ee;
            } catch (Exception e) {
                e.printStackTrace();
                int errCode = 2106;
                String msg = "Error while computing variance in " + this.getClass().getSimpleName();
                throw new ExecException(msg, errCode, PigException.BUG, e);
            }
                
        }
    }

    static public class Intermediate extends EvalFunc<Tuple> {
        @Override
        public Tuple exec(Tuple input) throws IOException {
            try {
                DataBag b = (DataBag)input.get(0);
                return combine(b);
            } catch (ExecException ee) {
                throw ee;
            } catch (Exception e) {
                int errCode = 2106;
                String msg = "Error while computing variacne in " + this.getClass().getSimpleName();
                throw new ExecException(msg, errCode, PigException.BUG, e);
            
            }
        }
    }

    static public class Final extends EvalFunc<Double> {
        @Override
        public Double exec(Tuple input) throws IOException {
            try {
                DataBag b = (DataBag)input.get(0);
                Tuple combined = combine(b);
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datafu-pig/src/main/java/datafu/pig/stats/LongVAR.java [114:164]:
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                    t.set(2, 1L);
                }
                return t;
            } catch(NumberFormatException nfe) {
                nfe.printStackTrace();
                // invalid input,
                // treat this input as null
                try {
                    t.set(0, null);
                    t.set(1, null);
                    t.set(2, 0L);
                } catch (ExecException e) {
                    throw e;
                }
                return t;
            } catch (ExecException ee) {
                ee.printStackTrace();
                throw ee;
            } catch (Exception e) {
                e.printStackTrace();
                int errCode = 2106;
                String msg = "Error while computing variance in " + this.getClass().getSimpleName();
                throw new ExecException(msg, errCode, PigException.BUG, e);
            }
                
        }
    }

    static public class Intermediate extends EvalFunc<Tuple> {
        @Override
        public Tuple exec(Tuple input) throws IOException {
            try {
                DataBag b = (DataBag)input.get(0);
                return combine(b);
            } catch (ExecException ee) {
                throw ee;
            } catch (Exception e) {
                int errCode = 2106;
                String msg = "Error while computing variacne in " + this.getClass().getSimpleName();
                throw new ExecException(msg, errCode, PigException.BUG, e);
            
            }
        }
    }

    static public class Final extends EvalFunc<Double> {
        @Override
        public Double exec(Tuple input) throws IOException {
            try {
                DataBag b = (DataBag)input.get(0);
                Tuple combined = combine(b);
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