The graph above is a scatter plot with 35 points, each representing th

Question

https://gmatclub.com/forum/download/file.php?mode=view&id=65890 The graph above is a scatter plot with 35 points, each representing the population of a city and the number of auto thefts in that city, per person, per year. All 35 measurements were made in the year 2010, counting the number of auto thefts during the year and the number of residents in each city as of January 1, 2010. The dashed line runs through points (0, 0) and (35, 1200). Use the drop-down menus to fill in the blanks in each of the following statements based on the information given by the graph. 1. The number of cities that had at least 20 auto thefts per 1,000 is closest to GRAPH_1_PLACEHOLDER % of the total cities measured. 2. Every city with a population of no more than 600,000 had no more than GRAPH_2_PLACEHOLDER auto thefts per 1,000 people. The Last question based on this stem can be found here. 1.jpg

zhanbo · Answer

Question 1 :
Manually count dots representing cities that had at least 20 thefts per 1000 (on the line or to the right of x=20), and I got 12
12/35 =0.3429...
My answer is  (B) .

Question 2 :
All the cities with a population of no more than 600,000 are below line y=600.
Find the rightmost dot, which is approximately 27.5
My answer is  (C) .

Question 3: 
I actually do not know what  equivalent relationship  exactly means. Someone please enlighten me. 
My answer is  (A) . Those dots do show the positive relationship between the two dimensions. Should we draw a line of best fit (similar to dotted line or solid line), it should have a positive slope.

sharanyasri · Answer

1) 12/35 ~33%
2) Looking at the plot, no more than 30 auto thefts per 1000
3) positive correlation: auto thefts increase with increase in population

false9 · Answer

1. B. 12/35.

2. C.

3. A.

Sr1994 · Answer

1. 
To find this, first, we need to identify the number of cities that have at least 20 auto thefts per 1000. If we look at the X-Axis, we can find the auto thefts per 1000.

Navigate to 20(20,0) on X-axis and see how many dots are there beyond 20. If we look closely, we can see that there are 12 points beyond 20.

Now we need to identify what's the percentage.

We know that it is 12. So, 12 =  \frac{X}{100}  * 35 = 34.28 , close to 33.

Answer B

2. 
For this, we have to use the Y-Axis. Take the horizontal line of 600 (0,600). We have to take the points below this line, and there are 13 points below this line.
Now, if we see the X-Axis, there are no dots that are less than 600 beyond 30, but we have values beyond 20. So, it is safe to say that  "Every city with a population of no more than 600,000 had no more than   30   auto thefts per 1,000 people."

Answer C

3.  
Here, I made use of the thick non-dotted line as a divider. If we look at above and below this line, the numbers are close. (below = 16 & above = 19)
The overall trend of the population is positive, and the overall trend of auto thefts in cities is also positive. Hence it is safe to say that  "There is a   positive   relationship between a city’s population and its number of auto thefts per 1,000 people."

Answer A

sshwetima · Answer

The graph above is a scatter plot with 35 points, each representing the population of a city and the number of auto thefts in that city, per person, per year. All 35 measurements were made in the year 2010, counting the number of auto thefts during the year and the number of residents in each city as of January 1, 2010. The dashed line runs through points (0, 0) and (35, 1200).

Use the drop-down menus to fill in the blanks in each of the following statements based on the information given by the graph.

1. The number of cities that had at least 20 auto thefts per 1,000 is closest to_________% of the total cities measured.

(A) 16 
 (B) 33  
(C) 50

Atleast 12 cities are there - 12/35 ~ 33%

2. Every city with a population of no more than 600,000 had no more than__________ auto thefts per 1,000 people.

(A) 10 
(B) 20 
 (C) 30  - from graph, max is around 27

3. There is a(n) ____________ relationship between a city’s population and its number of auto thefts per 1,000 people.

(A) positive 
 (B) negative   higher city population , lower auto thefts
(C) equivalent

Sajjad1994 · Answer

Competition mode is off now

The OA is: B, C, and A

Everyone got this correct! I will keep  zhanbo  and  Sr1994  on top.

Thank you!

riri3026 · Answer

Sajjad1994 ,

can you help me out understanding how to interpret if there is a positive relation just by looking at the graph. As I can answer that with a table but this is something I am getting wrong.

evitayulisetiani4 · Answer

I didnt count

i answer with logic

20 to right has no the smallest amount yet less than 50%  so then 33%

below 600 is all spread ( postive corelation )  so not more than 30

The graph above is a scatter plot with 35 points, each representing th

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The graph above is a scatter plot with 35 points, each representing th

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