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Set S contains exactly 10 numbers and has an average (arithmetic mean) 29 Mar 2016, 03:24
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Set S contains exactly 10 numbers and has an average (arithmetic mean) of 6.2. If one of the numbers in Set S is increased by 5, while all other numbers remain the same, what is the new average of Set S?

A. 6.6
B. 6.7
C. 6.8
D. 6.85
E. 6.9
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B
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 29 Mar 2016, 03:53
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Old set S - Total is avg * no of elements = 6.2*10 = 62
If one number is increased by 5 then total increased to 62+5=67
New avg - 67/10 = 6.7.

Hence answer is B.
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 30 Mar 2016, 05:25
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Sum => 62
here one value is increased by 5 => new sum = 67 so mean = 6.7
hence B
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 08 Jan 2018, 09:15
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Bunuel
Set S contains exactly 10 numbers and has an average (arithmetic mean) of 6.2. If one of the numbers in Set S is increased by 5, while all other numbers remain the same, what is the new average of Set S?

A. 6.6
B. 6.7
C. 6.8
D. 6.85
E. 6.9
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Current Total = 62
After Increase by 5 total score is = 67

So, Average becomes 6.70

Thus, Answer will be (B)
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 08 Jan 2018, 09:35
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Bunuel
Set S contains exactly 10 numbers and has an average (arithmetic mean) of 6.2. If one of the numbers in Set S is increased by 5, while all other numbers remain the same, what is the new average of Set S?

A. 6.6
B. 6.7
C. 6.8
D. 6.85
E. 6.9
Show more

Set S = (x + x + 1 + x + 2 .........., x + 10)/10 = 6.2

10x + 45 = 62

10x = 17

x = 1.7

Adding 5 in "x" we get new average as 1.7 + 5 = 6.7 (B)
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 08 Jan 2018, 22:10
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S = Sum of all numbers in the set
S/10 = 6.2
S = 62
Since the problem says one of the numbers in the set increases by 5, the sum of all the numbers also increases by 5.
Thus, S + 5 = 62 + 5
S + 5 = 67

If the new sum is 67, then the new average of the 10 numbers is 6.7 (Option B)
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Set S contains exactly 10 numbers and has an average (arithmetic mean) 08 Jan 2018, 22:40
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One number becomes increased by 5. So let's assume every number is 6.2
5 has to be distributed among 10 so each gets .5 more. 6.2+.5=6.7

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Set S contains exactly 10 numbers and has an average (arithmetic mean) 04 Jun 2023, 04:10
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