Using Likert-type scale items, Professor Wong developed an index to assess job morale. Wong administered the index to 2,000 workers and found that a few of the responses were missing. Which of the following strategies would be BEST for Wong to use?
a. exclude the cases that contained the missing data from the analysis.
b. assign the middle value to cases with missing data.
c. analyze the cases that had missing data to interpret their meaning.
d. assign values at random.
e. give up and start over again.
A
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