Which two data collection methods are frequently used together?
A)questionnaires and direct observation
B)interviewing and questionnaires
C)diaries and interviewing
D)direct observation and interviewing
E)most are used individually

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The Answer of Which two data collection methods are frequently used together?
A)questionnaires and direct observation
B)interviewing and questionnaires
C)diaries and interviewing
D)direct observation and interviewing
E)most are used individually

Which Two Data Collection Methods Are Frequently Used Together