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02 May 2024, 07:07
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Dropdown 1: range of scores
Dropdown 2: Day 2 and Day 5
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
63% (01:47) correct
37%
(02:31)
wrong
based on 2888
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Not Attempted Yet
The graph shows the distributions of scores on official driving tests administered within a certain municipality for eight consecutive business days.
Select from each drop-down menu the option that creates the most accurate statement, given the information provided.
The graph provides enough information to determine that the over all of the days indicated in the graph is the same as that for combined.
ID: 100459
(IR01188)
(IR01188)
Attachment:
GMAT-Club-Forum-b7x5x85a.png [ 100.88 KiB | Viewed 8018 times ]
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Official Answer
Dropdown 1: range of scores
Dropdown 2: Day 2 and Day 5
15 Jun 2024, 08:08
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Engineer1
Solution:
Median: It is the middle value of all the scores placed in an order. But here we are dealing with only % of scores in a given range, so we cannot find Median.
Mean: The above is true for mean too.
Range: The highest score vs the lowest score. Here, we do get know the higest and lowest for each day. So, Range is the only measure of tendency that can be found.
From the above , we can say that we will have Range for blank 1.
Range for all days will be the highest - lowest values for all 10 days = Highest of Day 2 - lowest of day 5 = 90 - 20 = 70.
The above gives us the answer for blank 2. when we combine day 2 and day 5, the range here too will become 70 as shown above.
Attachment:
GMAT-Club-Forum-okzt1zq9.png [ 100.88 KiB | Viewed 7951 times ]
02 May 2024, 07:19
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Official Explanation:
A. Infer
For each of eight business days, the graph shows the distribution of scores on driving tests administered on that day. Because neither the graph nor the text indicates how many scores there were for each day, neither the mean nor the median for the eight days can be determined. However, since the top of each stacked bar indicates the highest score for tests administered on that day and the bottom of each stacked bar indicates the lowest score for tests administered on that day, the range for the eight days would be equal to the highest score shown on the graph (90 on Day 2) minus the lowest score shown on the graph (20 on Day 5). Therefore, the range of the scores for all eight days is equal to the range of the scores for Days 2 and 5 combined.
The correct answer is range of scores.
B. Infer
Based on the explanation for A, the correct answer is Day 2 and Day 5.
The correct answer is Day 2 and Day 5.
A. Infer
For each of eight business days, the graph shows the distribution of scores on driving tests administered on that day. Because neither the graph nor the text indicates how many scores there were for each day, neither the mean nor the median for the eight days can be determined. However, since the top of each stacked bar indicates the highest score for tests administered on that day and the bottom of each stacked bar indicates the lowest score for tests administered on that day, the range for the eight days would be equal to the highest score shown on the graph (90 on Day 2) minus the lowest score shown on the graph (20 on Day 5). Therefore, the range of the scores for all eight days is equal to the range of the scores for Days 2 and 5 combined.
The correct answer is range of scores.
B. Infer
Based on the explanation for A, the correct answer is Day 2 and Day 5.
The correct answer is Day 2 and Day 5.
