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01 Apr 2021, 02:15
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
68% (01:36) correct
32%
(01:35)
wrong
based on 78
sessions
History
Date
Time
Result
Not Attempted Yet
P = {40, 50, 60, 60, 70, x}
For what value of x are the mode, the median and the average of set P above equal?
A. 20
B. 35
C. 60
D. 80
E. 90
For what value of x are the mode, the median and the average of set P above equal?
A. 20
B. 35
C. 60
D. 80
E. 90
01 Apr 2021, 02:47
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Bookmarks
P = {40, 50, 60, 60, 70, x}
Rather than calculating, we can observe terms and predict the answer
A. 20
Mean, median and mode all will be different; Hence, eliminate
B. 35
Mean, median and mode all will be different; Hence, eliminate
C. 60
Mean will be different than median and mode; Hence, eliminate
D. 80
Mean, median and mode all will be equal to 60; Hence, correct choice
E. 90
Mean will be different than median and mode; Hence, eliminate
Rather than calculating, we can observe terms and predict the answer
A. 20
Mean, median and mode all will be different; Hence, eliminate
B. 35
Mean, median and mode all will be different; Hence, eliminate
C. 60
Mean will be different than median and mode; Hence, eliminate
D. 80
Mean, median and mode all will be equal to 60; Hence, correct choice
E. 90
Mean will be different than median and mode; Hence, eliminate
01 Apr 2021, 05:22
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Bookmarks
The only we to get a mode for this set is to have x be 60. Hence, just substitute for x=80 in mean formula, we get mean as 60. This way, mean = median = mode = 60.
Therefore, answer is D.
Therefore, answer is D.
