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13 Mar 2022, 04:01
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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:
55%
(hard)
Question Stats:
53% (01:17) correct
47%
(01:27)
wrong
based on 117
sessions
History
Date
Time
Result
Not Attempted Yet
find the value of x?
1) The Standard deviation of the set A= {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
2) The Mean of set {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
Source: https://www.GMATinsight.com
1) The Standard deviation of the set A= {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
2) The Mean of set {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
Source: https://www.GMATinsight.com
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14 Mar 2022, 08:04
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target find value of x
1) The Standard deviation of the set A= {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
SD is the avg variation of terms from the mean value
here SD is >1 and will not change if the new inclusion of value of x is 3
sufficient
#2
The Mean of set {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
current mean of set = 3
with addition of 3 the mean will be 3 only sufficient
OPTION D is correct
1) The Standard deviation of the set A= {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
SD is the avg variation of terms from the mean value
here SD is >1 and will not change if the new inclusion of value of x is 3
sufficient
#2
The Mean of set {1, 2, 3, 4, 5} remains the same after the inclusion of a new value x in the set
current mean of set = 3
with addition of 3 the mean will be 3 only sufficient
OPTION D is correct
GMATinsight
06 Apr 2022, 03:03
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Please recheck the OA and St1
St2: x must be equal to mean = 3.
St1: if we use x = 3 in St1, the SD will decrease.
Please recheck.
St2: x must be equal to mean = 3.
St1: if we use x = 3 in St1, the SD will decrease.
Please recheck.
GMATinsight
