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GRE Prep Club Team Member
Joined: 20 Feb 2017
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A student worked for 20 days. For each of the amounts shown in the fir
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18 Feb 2023, 23:10
18 Feb 2023, 23:10
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A student worked for 20 days. For each of the amounts shown in the first row of the table, the second row gives the number of days that the student earned that amount. What is the median amount of money that the student earned per day for the 20 days?
A. 96
B. 84
C. 80
D. 70
E. 48
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Re: A student worked for 20 days. For each of the amounts shown in the fir
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20 Feb 2023, 08:21
20 Feb 2023, 08:21
Expert Reply
A student worked 20 days.
The median of a set with even number of terms is the average of the two middle terms when arranged in ascending or descending order. Since the data (amount earned per day) is already arranged in descending order there is no need to rearrange it.
The median will be the average of the 10th and 11th values (either in ascending or descending order) --> both of those values are 84 --> the median is (84+84)/2.
Answer: B.
The median of a set with even number of terms is the average of the two middle terms when arranged in ascending or descending order. Since the data (amount earned per day) is already arranged in descending order there is no need to rearrange it.
The median will be the average of the 10th and 11th values (either in ascending or descending order) --> both of those values are 84 --> the median is (84+84)/2.
Answer: B.
gmatclubot
Re: A student worked for 20 days. For each of the amounts shown in the fir [#permalink]
20 Feb 2023, 08:21
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