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1. Highest range in 1980, hence false
2. Serbia is highest for 4 times, hence false
3) True
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Official Explanation

Statement 1: False. The range for a year is defined as the highest value minus the lowest value shown for that year. Rather than calculate the ranges for every year provided, use estimation to see if you can find any year with a greater range than 1992.

First sort by 1992. Notice that the minimum is 119.87 and the maximum is 137.48. If you can find a year that has a lower minimum and a higher maximum, that year would have a larger range and the statement would be false.

Sort by 1980. The minimum in this year was 118.65 (lower than in 1992) while the maximum in this year was 143.12 (greater than in 1992). Since the range in 1980 is greater than in 1992, 1992 cannot have the greatest range. The statement is False.

Note: if 1980 had not had a greater range, you would have next checked 1984 and so on.

Statement 2: False. Sort each column independently, noting the country with the highest blood pressure for each year. The results are:

1980: Finland
1984: Finland
1988: Serbia
1992: Serbia
1996: Serbia
2000: Serbia

The nation that most frequently ranked highest in blood pressure was Serbia not Finland; this statement is False.

Note that if the sorting is performed chronologically, as shown above, then you could stop after checking 1996. At this point, Serbia was already the highest in 3 of the years, whereas Finland was the highest in only 2 of the years, so at best Finland could only tie with Serbia (if Finland were highest in 2000).

Statement 3: True. First, find the countries with mean blood pressure below 125 mmHg in 1980. Sort by 1980. Six countries fix the requirement: Papua New Guinea, Cambodia, India, Thailand, Vietnam, and Nepal. Next, find how many of these countries had a mean blood pressure below 125 mmHg in 2000. Rather than sort by 2000, leave the table as it is and scan over to the 2000 column; if you find 3 (at least half), then you can stop.

Papua New Guinea, Cambodia, and Thailand are all still below 125 mmHg, so at least half of the countries do still fit the required statistic. This statement is True.
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"select True if the statement can be verified as true based on the information in the table"

What I do not understand here is why they are asking us whether "it can be verified as true". Yes, ALL of the statements CAN BE verified as true. Shouldn't the question be, "Select true if the statement is True based on the information in the table."? On the GMAT, "can be shown to be true" is never the same as "is true". The first one only checks for sufficiency while the second one checks for actual solution.

Does the actual GMAT use such confusing language on the IR?
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Hello from the GMAT Club BumpBot!

Thanks to another GMAT 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).

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