The table lists minimum temperature, maximum temperature, an

Question

The table lists minimum temperature, maximum temperature, and weather conditions reported in 30 cities on 6 continents on February 19, 2011.
    City  
  Continent  
  Minimum
temperature (°C)  
  Maximum
temperature (°C)  
  Weather
conditions  
 
  Atlanta 
 North America 
 11 
 21 
 cloudy 
 
  Auckland 
 Oceania 
 18 
 25 
 cloudy 
 
  Bangkok 
 Asia 
 26 
 34 
 cloudy 
 
  Beijing 
 Asia 
 -3 
 10 
 fine 
 
  Berlin 
 Europe 
 -4 
 -1 
 cloudy 
 
  Buenos Aires 
 South America 
 20 
 29 
 rain 
 
  Cairo 
 Africa 
 14 
 24 
 fine 
 
  Chicago 
 North America 
 -4 
 3 
 cloudy 
 
  Dublin 
 Europe 
 5 
 11 
 bright 
 
  Frankfurt 
 Europe 
 1 
 7 
 cloudy 
 
  Houston 
 North America 
 16 
 24 
 cloudy 
 
  Johannesburg 
 Africa 
 16 
 26 
 thunderstorms 
 
  Kuala Lumpur 
 Asia 
 24 
 33 
 rain 
 
  London 
 Europe 
 5 
 10 
 rain 
 
  Los Angeles 
 North America 
 10 
 15 
 showers 
 
  Madrid 
 Europe 
 5 
 12 
 rain 
 
  Manila 
 Asia 
 22 
 32 
 thunderstorms 
 
  Mexico City 
 North America 
 7 
 25 
 fine 
 
  Montreal 
 North America 
 -6 
 -4 
 bright 
 
  Mumbai 
 Asia 
 21 
 30 
 fine 
 
  New York 
 North America 
 2 
 3 
 snow 
 
  Paris 
 Europe 
 5 
 7 
 rain 
 
  Rio de Janeiro 
 South America 
 21 
 38 
 cloudy 
 
  Santiago 
 South America 
 11 
 29 
 fine 
 
  Seoul 
 Asia 
 -3 
 9 
 cloudy 
 
  Sydney 
 Oceania 
 25 
 29 
 showers 
 
  Tehran 
 Asia 
 3 
 11 
 haze 
 
  Tokyo 
 Asia 
 3 
 9 
 fine 
 
  Toronto 
 North America 
 -6 
 -2 
 cloudy 
 
  Vancouver 
 North America 
 -2 
 5 
 fine

For each of the following statements, select  Yes  if the statement is true based solely on the information reported for these cities on this day. Otherwise, select  No .

arpanpatnaik · Answer

The answers would be, True, False and True.

Statement 1: Mean Maximum Temp for South America is 33.5 where as the mean max for Oceania is 27. Hence the answer is true.
Statement 2: All the minimum temps for cities with weather as fine are greater than 0. Negative temps are only available for cloudy and Bright weather conditions. 
Statement 3: The set of minimum temps in Asian cities is {-3,-3,3,3,21,22,24,26}. The median is 12. Hence, True.

Please correct me if I am wrong!

Regards,
Arpan

fameatop · Answer

The mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.  YES 
At least one city reporting fine weather had a maximum temperature less than 0°C.  NO 
For the Asian cities, the median minimum temperature was 12°C. YES

srcc25anu · Answer

Also Attaching the excel for this question.

1.The mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.
Mean Max for South America = 32
Mean Max for Oceania = 27
TRUE

2. At least one city reporting fine weather had a maximum temperature less than 0°C.
None of the Cities with FINE weather has a maximum temerature less than 0. The lowest of the maximum tem for these fine weather cities is 5 degree for VAN
FALSE

3.For the Asian cities, the median minimum temperature was 12°C.
There are 8 Asian cities and their minimum temps listed in ascending order is: {-3,-3,3,3,21,22,24 and 26}
Median is the average of 4th and 5th terms (in this case 3 and 21) which is 12 degrees
Hence TRUE

Apt0810 · Answer

1) Yes,Mean of max temperature for cities in South America=29+38+29/3=32
Mean of max temperature for cities in Oceania=25+29/2=27

2)No,All countries which are reporting fine weather have +ve max temperatures

3)Yes,Asian cities have minimum temperature as:26,-3,24,22,21-3,3,3

So rearranging them :

-3,-3,3,3,21,22,24,26 so median is (21+3)/2=12°C

Posted from my mobile device

bM22 · Answer

1. The mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.

The mean maximum temperature for the cities in South America : (29+38+29)/3 = 32°C.

The mean maximum temperature for the cities in Oceania: (29+25)/2 = 27.5°C.
;
Thus its clear that the mean max temp for cities of South America is > mean max temp for cities of Oceania.

Answer is Yes.

2. At least one city reporting fine weather had a maximum temperature less than 0°C.
It can be very easily inferred from the passage that no city with a fine weather had a max temp. < 0°C.

Answer No.

3.For the Asian cities, the median minimum temperature was 12°C.
Now arranging the minimum temperature of Asian cities in ascending order we get: -3, -3, 21, 22, 3, 3, 24,26.
Since there are even no. of cities median = (21+3)/2 = 12°C.

Answer Yes.

Sajjad1994 · Answer

Official Explanation

The mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.

Sorting on Continent  reveals that, when temperatures are measured in °C, the mean maximum temperature for the 3 cities listed in South America was 1/3 (29 + 38 + 29), or 32, while the mean maximum temperature for the 2 cities listed in Oceania was 1/2 (25 + 29), or 27. Since 32 > 27, the mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.

The correct answer is Yes.

At least one city reporting fine weather had a maximum temperature less than 0°C.

Sorting on Weather conditions  reveals 7 cities reporting fine weather, for which the least maximum temperature reported was 5°C. Thus none of the 7 cities reported a maximum temperature less than 0°C.

The correct answer is No.

For the Asian cities, the median minimum temperature was 12°C.

Sorting on Continent reveals that there are eight Asian cities listed. When the minimum temperatures for the eight cities are ordered from least to greatest, the median minimum temperature is equal to the arithmetic mean of the fourth and fifth temperatures in the list. Using the Continent sort, the first five temperatures in the list (in °C) are -3, -3, 3, 3, and 21, so the median minimum temperature is therefore 12

The correct answer is Yes.

ZeroSquare · Answer

in sol 1 - Shouldn't the mean max temp for SA be 32 instead of 33.5?

Bunuel · Answer

Yes, you are correct. The mean maximum temperature for the South American cities is 32°C:

(29 + 38 + 29)/3 = 32

The final Yes answer is still correct because 32°C is greater than Oceania’s 27°C.

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City	Continent	Minimum temperature (°C)	Maximum temperature (°C)	Weather conditions
Atlanta	North America	11	21	cloudy
Auckland	Oceania	18	25	cloudy
Bangkok	Asia	26	34	cloudy
Beijing	Asia	-3	10	fine
Berlin	Europe	-4	-1	cloudy
Buenos Aires	South America	20	29	rain
Cairo	Africa	14	24	fine
Chicago	North America	-4	3	cloudy
Dublin	Europe	5	11	bright
Frankfurt	Europe	1	7	cloudy
Houston	North America	16	24	cloudy
Johannesburg	Africa	16	26	thunderstorms
Kuala Lumpur	Asia	24	33	rain
London	Europe	5	10	rain
Los Angeles	North America	10	15	showers
Madrid	Europe	5	12	rain
Manila	Asia	22	32	thunderstorms
Mexico City	North America	7	25	fine
Montreal	North America	-6	-4	bright
Mumbai	Asia	21	30	fine
New York	North America	2	3	snow
Paris	Europe	5	7	rain
Rio de Janeiro	South America	21	38	cloudy
Santiago	South America	11	29	fine
Seoul	Asia	-3	9	cloudy
Sydney	Oceania	25	29	showers
Tehran	Asia	3	11	haze
Tokyo	Asia	3	9	fine
Toronto	North America	-6	-2	cloudy
Vancouver	North America	-2	5	fine

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