For each of Six Internet-based companies and each of several years

Question

https://gmatclub.com/forum/download/file.php?id=81937 For each of Six Internet-based companies and each of several years, the graph shows the average number of times per week the home page of the company was viewed. The vertical axis is in powers of 10. Select from each drop-down menu the option that creates the most accurate statement, based on the information in the graph. Over the period depicted in the graph, the company that showed the least percentage increase in the average number of visits per week to the home page of its website is GRAPH_1_PLACEHOLDER . Over the period depicted in the graph, the company that showed the greatest percentage increase in the average number of visits per week to the home page of its website is GRAPH_2_PLACEHOLDER . https://gmatclub.com/forum/download/file.php?id=81938 GMAT-Club-Forum-ep0sz2zg.png GMAT-Club-Forum-14ut9c5b.png

Bunuel · Accepted Answer

https://gmatclub.com/forum/download/file.php?id=81941 Company A's visits increased from ≈1,500 to ≈70,000, which corresponds to an increase of approximately 40.x times. Company B's visits increased from ≈2,000 to ≈200,000, which corresponds to an increase of approximately 100 times. Company C's visits increased from ≈700 to ≈60,000, which corresponds to an increase of approximately 80.x times. Company D's visits increased from ≈1,000 to ≈30,000, which corresponds to an increase of approximately 30 times. Company E's visits increased from ≈500 to ≈20,000, which corresponds to an increase of approximately 40 times. Company F's visits increased from ≈4,000 to 900,000, which corresponds to an increase of approximately 200 times. GMAT-Club-Forum-46zrkl7o.png GMAT-Club-Forum-y6st599n.png GMAT-Club-Forum-ez2antgy.png

KarishmaB · Answer

Here is the video explanation for the logarithmic scale in this question: https://youtu.be/x7yWqJ7EgV8 Ignore the '000s. So the y scale goes from .1 to 1000. It is a logarithmic scale so the same interval higher up on the scale shows a larger increase. We can compare Percentage increase in the number of visits by comparing Final Value/Initial Value. Company A -> Final Value/Initial Value = 75/1.5 = 37.5 Company B -> Final Value/Initial Value = 200/2.2 = less than 100 Company D -> Final Value/Initial Value = 30/1 = around 30 Company E -> Final Value/Initial Value = 20/.55 = around 40 Company F -> Final Value/Initial Value = 900/3.5 = less than 300 Least percentage increase = D Greatest percentage increase = F GMAT-Club-Forum-opx3ony9.png

Jayam12 · Answer

@Bunuel- what does powers of 10 mean in vertical axis? Like 1000 is 10^3 and 10,000 is 10^4 ?

Please correct if I am interpreting it wrongly

YOLO1234 · Answer

Hey hello, looking for just the slope of the curve might lead to solving this question incorrectly, since slope might be able to give you net increase/decrease but since percentage increase is asked it involves a denominator which is an absolute value different for different companies. Since this denominator can change the value of percentages, i wouldnt really recommend going at this question with only the slopes. Hope it helps. GMAT-Club-Forum-hlab6q85.png

SatvikVedala · Answer

Hi  Jayam12

The information is provided to make candidate understand that the scale is logarthmic scale not linear scale

For example, 1x10^2 --- 2x10^2 --- 3x10^2 --- 4x10^2 --- 5x10^2 --- 6x10^2 --- 7x10^2 --- 8x10^2 --- 9x10^2 --- 1x10^3 -----2x10^3-----3x10^3 & so on....

I hope this clears your query

-it's Satvik-
I was here, I was solving & I was learning

Nsp10 · Answer

Hello  Bunuel  ,
Can we say we can not see the slope here since the Y axis is not starting from 0 here ?

Bunuel · Answer

The fact that 0 is not on the Y-axis doesn’t matter. Notice, though, that the graph uses a logarithmic scale (in powers of 10), not a linear one, and you don’t need to know how slope works on a log scale; in this case, as shown above, the question has a simple solution without it.

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For each of Six Internet-based companies and each of several years

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For each of Six Internet-based companies and each of several years