【简答题】—He said he would finish it on time. —Well,maybe ________ is not what he says but what he does that counts.
【简答题】设一样本有5个观察值,6、8、9、12、13,则 =(),s=(),sx=(),CV=()。
【单选题】(What) he does, he always does (it) well, (though) he has (some) difficulties.
【单选题】(What) he does, he always does (it) well, (though) he has (some difficulties).
【单选题】---- What does he do? ---- He is an actor and director ______.
【简答题】What does the sentence 'but the well-mannered motorist is the exception to the rule' imply?
【简答题】设一样本有5个观察值,6、8、10、12、14,则CV=()。