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In a group of 60 people, the average (arithmetic mean) age o
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02 Dec 2018, 05:35
02 Dec 2018, 05:35
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82% (00:48) correct
17% (00:59) wrong based on 98 sessions
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In a group of 60 people, the average (arithmetic mean) age of the 40 females is 60, and the average age of the 20 males is 70.
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given
Quantity A |
Quantity B |
Average age of all 60 people |
65 |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given
Re: In a group of 60 people, the average (arithmetic mean) age o
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05 Dec 2018, 08:59
05 Dec 2018, 08:59
2
1
If there were equal number of male and female the avg would have been half the avg between male and female i.e 65 however females are more than male hence avg will drift towards female's avg and will be lower than 65
Re: In a group of 60 people, the average (arithmetic mean) age o
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04 Jan 2023, 21:08
04 Jan 2023, 21:08
70 * (1/3) = 23.333 weighted average of male population
60 * (2/3) = 40 weighted average of female population
23.33 + 40 = 63.33
QB is larger
60 * (2/3) = 40 weighted average of female population
23.33 + 40 = 63.33
QB is larger
