DATA MANAGEMENT: You get parent app usage data: Class A: 80 Class B: 95% Class C: 70% Class D: (missing). Which is the best cleaned version?
A: all parents, B: most parents, C: some parents, D: none
A: 80%, B: 95%, C: 70%, D: (no data)
A: good, B: average, C: poor, D: missing info
A: high, B: very high, C: medium, D: ?