Observe the R commander summary output below for the variable "years of education completed." How much missing data is there? > numSummary (G552022_Bauman, "educ", drop-FALSE), statistics ("mean", "ad", "IOR", "quantiles") 5.75,1)) mean ad IQR 0% 25% 50% 75% 100% 14.10812 2.893797 40 12 14 16 20 3524 20 O 2.89 O 14.10 O 3524 O 20

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