13. If the observations are 5
and -5, their geometric mean is
A. 5
B. -5
C. 0
D. none of the above
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13. If the observations are 5
and -5, their geometric mean is
A. 5
B. -5
C. 0
D. none of the above
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Answer:D none of the above
Step-by-step explanation: because we can calculate geometric mean of positive numbers only..