January 20, 2019 January 20, 2019 07:00 AM PST 07:00 AM PST Get personalized insights on how to achieve your Target Quant Score. January 21, 2019 January 21, 2019 10:00 PM PST 11:00 PM PST Mark your calendars  All GMAT Club Tests are free and open January 21st for celebrate Martin Luther King Jr.'s Birthday.
Author 
Message 
TAGS:

Hide Tags

Manager
Joined: 02 Dec 2012
Posts: 177

According to the chart shown, which of the following is
[#permalink]
Show Tags
12 Dec 2012, 02:05
Question Stats:
68% (01:23) correct 32% (01:30) wrong based on 2407 sessions
HideShow timer Statistics
Attachment:
Shipments.png [ 60.45 KiB  Viewed 30414 times ]
According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive? (A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000
Official Answer and Stats are available only to registered users. Register/ Login.




Math Expert
Joined: 02 Sep 2009
Posts: 52296

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
12 Dec 2012, 02:10
According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order. The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics




Intern
Joined: 24 Sep 2012
Posts: 4

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
13 Apr 2013, 04:56
Dummies like myself tend to start questions from the basics
Before starting, you need to know how to calculate the Median value  The Median is the "middle number" (in a sorted list of numbers).
To find the Median number, you need to know how many numbers there are in a set, its' total could either be even or odd. For example
Set 1 ( 2, 5, 6, 7, 8 ) = 5 numbers (odd), the Median value is the 3rd number, 5.
Set 2 ( 2, 4, 6, 8, 10, 11) = 6 numbers (even)0, the Median value is average of the two middle valudes, e.g. (6+8)/2= 7
In the question, 1990  2000, there are 11 (odd) numbers in the chart, you will have to sort their values from the lowest to the highest and count the 6th number.
Year '000 1 1991 180 2 1990 190 3 1992 210 4 1993 270 5 2000 270 6 1994 310 7 1995 350 8 1999 360 9 1997 370 10 1996 380 11 1998 390
The correct answer is C
Thanks



Manager
Joined: 17 Jul 2010
Posts: 112

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
30 Apr 2013, 21:11
Here's a way of doing this problem, without breaking your head is to number the years from left to right, so for 1990, I used 1. 1992, 2, 1993, 3. .....etc. Then list the same digits in terms of highest value starting from the highest number on the left so for the highest I chose year 9, to the lowest number ( i chose year 1). Make sure you double check the count, so if it's 11 years, you must have 11 digits, organize then pick your median.
In my sequence of numbers I got 9871065431121, median number shows 5.
Kudos if it helps!



Senior Manager
Joined: 16 Dec 2011
Posts: 306

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
30 Apr 2013, 21:47
Walkabout wrote: Attachment: Shipments.png According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive? (A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 Without finding value of each bar, it is possible to find out the middle value in 30 sec as the picture is simple enough. There are 11 bars, so there will 5 taller and 5 shorter bars than the median. First four bars and last bar in the picture are the shortest 5 bars. Bar number 610 in the picture are tallest 5 bars. So the median is the value of 5th bar in the picture, which is little above 300,000. So the approximate value must be 310,000 (Option C).



Math Expert
Joined: 02 Sep 2009
Posts: 52296

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
18 Jun 2013, 00:42



Intern
Joined: 16 Oct 2013
Posts: 3

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
17 Dec 2013, 08:51
I'm sorry I feel very foolish for getting this wrong and I'm sure this question will sound just as foolish.
I correctly found which bar was the Median bar on the graph (because I know how to find the median) but then estimated that the value of that bar was 325,000 (D). Am I just supposed to be better at reading graphs to know that it's supposed to be 310? I just don't understand how I'm supposed to know that the median bar on the graph is 310 without any other numerical help besides the 100,000 increments on the right. I would definitely get this wrong on the real exam for the same reason.



Math Expert
Joined: 02 Sep 2009
Posts: 52296

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
17 Dec 2013, 08:56
Rdotyung wrote: I'm sorry I feel very foolish for getting this wrong and I'm sure this question will sound just as foolish.
I correctly found which bar was the Median bar on the graph (because I know how to find the median) but then estimated that the value of that bar was 325,000 (D). Am I just supposed to be better at reading graphs to know that it's supposed to be 310? I just don't understand how I'm supposed to know that the median bar on the graph is 310 without any other numerical help besides the 100,000 increments on the right. I would definitely get this wrong on the real exam for the same reason. Well, 6th tallest bar, is a bit more than 300,000 so approximately 310,000. 325,000 would be 300,000 and 1/4th of the increment and the bar for 1994 is less than that.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Manager
Joined: 02 Jul 2012
Posts: 187
Location: India
GPA: 2.6
WE: Information Technology (Consulting)

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
14 Sep 2014, 06:29
Bunuel wrote: According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order.I marked E The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C. I marked it E, because the 6th bar is nowhere close to 300,000, its seems to be close to 350,000, or at best close to 325,000. I still feel that the answer choice C is wrong.
_________________
Give KUDOS if the post helps you...



Math Expert
Joined: 02 Sep 2009
Posts: 52296

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
14 Sep 2014, 15:36
Thoughtosphere wrote: Bunuel wrote: According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order.I marked E The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C. I marked it E, because the 6th bar is nowhere close to 300,000, its seems to be close to 350,000, or at best close to 325,000. I still feel that the answer choice C is wrong. Please reread the solution. We need the value of 6th tallest bar NOT 6th bar from.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Manager
Joined: 02 Jul 2012
Posts: 187
Location: India
GPA: 2.6
WE: Information Technology (Consulting)

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
14 Sep 2014, 17:56
Bunuel wrote: Thoughtosphere wrote: Bunuel wrote: According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order.I marked E The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C. I marked it E, because the 6th bar is nowhere close to 300,000, its seems to be close to 350,000, or at best close to 325,000. I still feel that the answer choice C is wrong. Please reread the solution. We need the value of 6th tallest bar NOT 6th bar from. Hey thanks a lot. That was a conceptual error on my front. While finding the median I didn't sort the data in ascending / descending order.
_________________
Give KUDOS if the post helps you...



Director
Joined: 24 Nov 2015
Posts: 515
Location: United States (LA)

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
24 Apr 2016, 01:31
as the graph has 11 values, arrange them in ascending order will result in 6th number being the median value which comes out to be approximately 310000. so correct answer option C



Target Test Prep Representative
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
27 Apr 2016, 08:26
Walkabout wrote: Attachment: Shipments.png According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive? (A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 Solution: An easy way to determine which data value is the median is to take the total number of shipments, add 1, and then divide by 2: (11 + 1)/2 = 6 Thus, the median will be the 6th shipment. (Remember, we will have to list the data values in ascending order, and the 6th value will be the median.) We can always use the above method of determining the median when we have an odd number of terms. Let’s start by ordering the approximate number of shipments from least to greatest with the year in parentheses. Since we know the median is the 6th shipment, we can stop once we get to the 6th term. 1) 180,000 (1991) 2) 190,000 (1990) 3) 210,000 (1992) 4) 280,000 (1993) 5) 280,000 (2000) 6) 305,000 (1994) We see that 305,000 is the median number of shipments, which is closest to 310,000. The answer is C.
_________________
Jeffery Miller
Head of GMAT Instruction
GMAT Quant SelfStudy Course
500+ lessons 3000+ practice problems 800+ HD solutions



Director
Joined: 23 Feb 2015
Posts: 602

According to the chart shown, which of the following is
[#permalink]
Show Tags
08 Nov 2016, 05:42
Bunuel wrote: According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order. The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C. i think the answer is not EXACT; it is approximate figure. @bunual, the tallest 6th bar did not indicate any specific figure. So, why we consider it as (C) 310,000? why don't we consider it as 325,000 (D)? Thanks...
_________________
“The heights by great men reached and kept were not attained in sudden flight but, they while their companions slept, they were toiling upwards in the night.” ― Henry Wadsworth Longfellow



Current Student
Joined: 12 Aug 2015
Posts: 2626

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
26 Dec 2016, 01:43



Manager
Joined: 03 Jan 2017
Posts: 150

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
25 Mar 2017, 05:26
20001990=10+1(because inclusive)
so, let's find 6th number in ascending order Answer is C



Study Buddy Forum Moderator
Joined: 04 Sep 2016
Posts: 1298
Location: India
WE: Engineering (Other)

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
13 Sep 2017, 17:52
JeffTargetTestPrepQuote: An easy way to determine which data value is the median is to take the total number of shipments, add 1, and then divide by 2: Is the approach valid for both even and and odd no in data set? Also arranging in either order shall not make a difference to median. Am I correct?



Manager
Joined: 02 Aug 2018
Posts: 70
Location: India
Concentration: Strategy, Operations
GPA: 3.5

Re: According to the chart shown, which of the following is
[#permalink]
Show Tags
19 Sep 2018, 10:14
Hi Bunuel Thanks for all your questions and clarifications. I wonder this answer , when you say 6th is actully the 95' bar chart which is somewhere 340/325 or so. Also with data points for 11 years, the mid point is 6th, am surprised that everytime I see the chart I see 6th as '95 but others are seeing '94. Help ? Bunuel wrote: According to the chart shown, which of the following is closest to the median annual number of shipments of manufactured homes in the United States for the years from 1990 to 2000, inclusive?(A) 250,000 (B) 280,000 (C) 310,000 (D) 325,000 (E) 340,000 We have 11 (odd) data points (from 1990 to 2000, inclusive), thus the median of these 11 numbers would be the middle term (6th largest number), when arranged in ascending order. The 6th largest number, the 6th tallest bar, is for year 1994, which corresponds to approximately 310,000. Answer: C.




Re: According to the chart shown, which of the following is &nbs
[#permalink]
19 Sep 2018, 10:14






