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QOTD#16 Average temperature of city X (highs and lows)
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30 Nov 2016, 16:03
30 Nov 2016, 16:03
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Question Stats:
100% (03:39) correct
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Question 7 During how many of the months in which City Y’s average rainfall exceeded 3 inches was City X’s average low temperature greater than or equal to 30 degrees?
A. One
B. Two
C. Three
D. Four
E. All
Question 8 The “monthly midpoint” is calculated by taking the average (arithmetic mean) of a month’s average high and low. Which of the following is the average monthly midpoint in City X for the 3-month period from July to September?
A. 55.3
B. 60.0
C. 64.7
D. 69.3
E. 74.0
A. One
B. Two
C. Three
D. Four
E. All
Show: :: OA
B
Question 8 The “monthly midpoint” is calculated by taking the average (arithmetic mean) of a month’s average high and low. Which of the following is the average monthly midpoint in City X for the 3-month period from July to September?
A. 55.3
B. 60.0
C. 64.7
D. 69.3
E. 74.0
Show: :: OA
C
Drill 2
Question: 7, 8
Page: 463
Question: 7, 8
Page: 463
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Re: QOTD#16 Average temperature of city X (highs and lows)
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30 Nov 2016, 16:08
30 Nov 2016, 16:08
1
Expert Reply
Explanation
Question 7. First, look on the bar chart to figure out which months had an average rainfall greater than 3 inches and then apply that information to the temperature chart. According to the bar chart, the only months that had an average rainfall exceeding 3 inches were January, February, March, October, November, and December. According to the line chart, only two of those months had average lows exceeding 30 degrees: October and November.
Hence option B is correct.
Question 8. This is a multi-step problem, so you should take it one step at a time. First, determine the monthly midpoint for each month. The high in July is 78, and the low is 59, so the monthly midpoint is: 78 + 59 = 137 ÷ 2 = 68.5. Similarly, the midpoint for August is: 76 + 57 = 133 ÷ 2 = 66.5. September’s midpoint is: 68 + 50 = 118 ÷2 = 59. The average of the three midpoints is: 59 + 66.5 + 68.5 = 194 ÷ 3 = 64.7, choice (C).
Hence option C is correct.
Question 7. First, look on the bar chart to figure out which months had an average rainfall greater than 3 inches and then apply that information to the temperature chart. According to the bar chart, the only months that had an average rainfall exceeding 3 inches were January, February, March, October, November, and December. According to the line chart, only two of those months had average lows exceeding 30 degrees: October and November.
Hence option B is correct.
Question 8. This is a multi-step problem, so you should take it one step at a time. First, determine the monthly midpoint for each month. The high in July is 78, and the low is 59, so the monthly midpoint is: 78 + 59 = 137 ÷ 2 = 68.5. Similarly, the midpoint for August is: 76 + 57 = 133 ÷ 2 = 66.5. September’s midpoint is: 68 + 50 = 118 ÷2 = 59. The average of the three midpoints is: 59 + 66.5 + 68.5 = 194 ÷ 3 = 64.7, choice (C).
Hence option C is correct.
Re: QOTD#16 Average temperature of city X (highs and lows)
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20 Sep 2022, 23:04
20 Sep 2022, 23:04
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
