Câu 7: C2090-011: IBM SPSS Statistics Level 1 v2

If you build an expression manually, as opposed to using a function (e.g., specify (V1+V2)/2 instead of MEAN(V1,V2)), which statement is true?

1. A. If any of the variables used in the expression has a missing value, it will be ignored and the expression will proceed to evaluate with variables that have valid values.
2. B. It will always return a valid value for each case, regardless of whether one or more of the source variable values are missing.
3. C. If any of the variables used in the expression has a missing value, the result for that case is a system-missing value. — đáp án hiện tại
4. D. If any of the variables used in the expression has a missing value, you will get a notification pointing this out before you proceed.