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A company that designs websites

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A company that designs websites [#permalink]

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New post 27 Sep 2014, 06:52
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Please explain question 2 and 3
Source : GMAT Prep
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Re: A company that designs websites [#permalink]

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New post 27 Sep 2014, 08:08
Great help. It will helps me a lot to build one website for me, Thanks for this post.

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Re: A company that designs websites [#permalink]

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New post 30 Sep 2014, 04:02
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I will give it a shot.

Survey asks people about which of the things in the list would be a potential benefit of adding a website.

People can choose one or more options they think will benefit.

Question B:Fewer than 25 % of the respondent who believe a website could help expand their customer base also believe a website could help them maintain their current market share.
I will take one case here:
Latino(459 ppl = X)
Expand customer base 26%
Preserve(Current) Market share 6 %.

People who think expand customer base = 26% of X = 0.26 X
A -> 25 % of the respondent who believe a website could help expand their customer base = 0.25 (0.26 X)= 0.065 X = 6.5 % of X
B -> People of think Preserve Market share = 6 %.

Clearly A is greater than B
You can apply the same to other community and find similar results.

Question C: Only a small proportion of respondents are concerned that they are losing market share.
The potential benefit listed is Preserve market share NOT Losing or Gaining market share.People gave opinion about only preserving market share not gaining or losing it.Information about losing market share is not available.
We only know that 94 % (100 - 6%) people think otherwise that Potential benefit is Gaining, Losing,Cant say etc .But we can find values of individuals.

Hope it helps :)
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I still dont get how B is supported here..
Experts..@ Bunuel,Karishma..Please guide..

Edit: I will be a bit more specific..How do we know that these are the same ppl who also believed in expanding the share..
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Re: A company that designs websites [#permalink]

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New post 31 Dec 2014, 14:29
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Hi JusTLucK04,

The percents in the table are specific enough to help you do a "comparison" instead of a calculation, but if you wanted to see the math, then here it is:

In the first column, we have 459 Latino respondents:

26% think that a website will help to expand the customer base:
26%(459) = about 119

6% think that a website will help maintain/preserve market share:
6%(459) = about 28

The second question in the set asks if the idea that the second number is LESS THAN 25% of the first number.

25%(119) = about 30. Since 28 < 30, this IS a reasonable/supported conclusion.

Now, performing these calculations is NOT really what this question is about (and it's not required either). The "shortcut" is to compare the percentages, since the percentages are both based on the SAME total number of respondents in the survey (and as such, THAT number doesn't really matter to this question).

In the Latino column...is 6% less than 1/4 of 25%.....YES
In the African American column...is 6% less than 1/4 of 29%....YES
In the Asian American column...is 4% less than 1/4 of 25%....YES
In the Native American column...is 6% less than 1/4 of 25%...YES

This is a constant, reasonable conclusion, so the answer to the second question is YES/SUPPORTED.

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A - supported

B, C - not supported

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New post 05 Jan 2015, 19:03
Hi jitendra31,

If you scroll up and look at the original screen capture, you'll see that the second statement is actually SUPPORTED, so you must have missed something in your approach/calculations. How did you go about approaching this question?

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New post 06 Jan 2015, 07:02
Dear Rich,

Where in the question it is stated that these 6% are those that also answered 'expand consumer base'. Whereas mathematically your calculations look alright, I was not sure of the logic and hence, the difference.

Hope this explains.

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Re: A company that designs websites [#permalink]

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New post 06 Jan 2015, 10:58
Hi jitendra31,

The information that we need to answer the second statement is in 2 of the rows:

1) 'Expand Customer Base' is the 1st row

2) 'Maintain their current market share' is actually written as 'Preserve Market Share' and is the 6th row.

Sometimes IR questions won't be strict with vocabulary and will use synonyms (re: 'maintain' and 'preserve' mean the same thing). Even if you did not know that those two words mean the same thing though, the words "market share" only show up in one row - the 6th row - so even if you were a little unsure about what data to use, the ONLY row that makes any sense would be the 6th one. From here, the rest of the work is more about the comparison of the percents and not about doing the actual long-winded calculation.

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Re: A company that designs websites [#permalink]

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New post 08 Jan 2015, 03:13
Hi Rich,

Read the question b closely. Pay attention to the word "ALSO". Where in the question stem it is mentioned that the two population segments are same. How do you infer that?

I have already stated that your maths is right, but you need to provide us more logic on the complete overlap of two sets. Why the remaining 74% (100%-26%, only for the second column as an example) are not thought of? Why can they not be a part of the 6% population?

Hope this explains.

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Re: A company that designs websites [#permalink]

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New post 08 Jan 2015, 13:00
Hi jitendra31,

If you add up the percents in each of the columns, you'll see that the total in each is GREATER than 100%, which means that some respondents believe that there are multiple benefits to having a website. Even if you had not noticed that though, the description refers to the survey asking respondents what they see as the potential BENEFITS (meaning possibly plural) of having a website (it does NOT state that each survey respondent selected "just one" of the potential benefits).

Just as in CR questions, the details in IR questions matter a great deal.

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New post 12 Jan 2015, 05:12
Rich,

I am appalled by your lack of sense of understanding logic. I am not interested in continuing this discussion any further. You won!

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Re: A company that designs websites [#permalink]

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New post 08 Aug 2015, 03:53
EMPOWERgmatRichC wrote:
Hi jitendra31,

If you add up the percents in each of the columns, you'll see that the total in each is GREATER than 100%, which means that some respondents believe that there are multiple benefits to having a website. Even if you had not noticed that though, the description refers to the survey asking respondents what they see as the potential BENEFITS (meaning possibly plural) of having a website (it does NOT state that each survey respondent selected "just one" of the potential benefits).

Just as in CR questions, the details in IR questions matter a great deal.

GMAT assassins aren't born, they're made,
Rich


Thanks Rich for the explanation. I really cannot understand one thing -

Yes, the respondents marked just more than one benefit on the list, but how do we know that the 25%people (X) were the ones who also said market share 6% (Y) as the benefit. It is very probable that there can be some people in this 25% that said 'improve communication' as one of the benefits.

If you can answer

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New post 08 Aug 2015, 04:00
Bunuel karishma or Other Experts

Experts,

If you can shed light on C part of the question. How is it not supported ?

The people who say 'Preserve Market Share' probably will be the ones who dread that they will lose market share. So, why can't I infer the same ?

Please if you can take me in the right direction ?

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Re: A company that designs websites [#permalink]

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Hi anewbeginning,

You bring up a really important point - maybe the people who list 'expand the customer base' are the same people who list 'preserve market share', BUT maybe they're not.

The prompt asks if the conclusion (that LESS than 25% of that first group ALSO is in the second group) is supported. EITHER WAY, it is!

Consider the following data:

26% of 459 Latinos listed "expand their customer base" = 119 people
6% of 459 Latinos listed "preserve market share" = 28 people

IF EVERYONE in the second group was also in the first group, then that would be 28/119 = about 23.5% (and that is the MAXIMUM PERCENT that it could be; if it's a smaller percent, then the conclusion is STILL supported). This relationship exists with EVERY group of people polled; thus, the second point IS SUPPORTED.

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Re: A company that designs websites [#permalink]

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New post 11 Aug 2015, 11:52
EMPOWERgmatRichC wrote:
Hi anewbeginning,

You bring up a really important point - maybe the people who list 'expand the customer base' are the same people who list 'preserve market share', BUT maybe they're not.

The prompt asks if the conclusion (that LESS than 25% of that first group ALSO is in the second group) is supported. EITHER WAY, it is!

Consider the following data:

26% of 459 Latinos listed "expand their customer base" = 119 people
6% of 459 Latinos listed "preserve market share" = 28 people

IF EVERYONE in the second group was also in the first group, then that would be 28/119 = about 23.5% (and that is the MAXIMUM PERCENT that it could be; if it's a smaller percent, then the conclusion is STILL supported). This relationship exists with EVERY group of people polled; thus, the second point IS SUPPORTED.

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yes, yes

I got it

Thanks EMPOWERgmatRichC

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Re: A company that designs websites [#permalink]

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New post 31 Mar 2016, 15:26
Hi EMPOWERgmatRichC,

Could you help to explain the final part of the question, as I have the same question as Steinbeck: The pepple who responded 'Preserve Market Share' probably will be the ones who dread that they will lose market share (while the others who did not dread that should respond in another way, e.g 'Increase/Expand Market Share' or something like that), so why can't we infer the same? Please correct me if my understanding is wrong.

Thank for your response :)

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Hi thuyduong91vnu,

The 3rd part of the question would probably be missed by a sizable group of Test Takers. To properly deal with that piece of the question, you have to re-read the introduction (above the table) - it describes how survey respondents were commenting on what they see as the POTENTIAL BENEFITS of having a website. This ENTIRE table is based on what respondents see as possible benefits - the benefits have not happened yet and they might not happen even if the respondents did have a website, but it's what they think might be benefits.

The 3rd part asks about the proportion of respondents who are CONCERNED about losing market share. We don't know ANYTHING about "concerns" though - the table and survey were NOT about that. To take it a step further, if you're going to infer that "preserve market share" is the same as "afraid of losing market share", wouldn't you infer the same thing about those who want to expand their customer base(s)? Wouldn't they dread losing market share too? When you combine those too groups, it's not really a "small proportion" of respondents.

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Hi Rich,

It is very clear now. Thanks for your explanation :-D

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Re: A company that designs websites [#permalink]

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New post 14 Aug 2016, 04:14
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Hi Rich,
Hope you are doing good.
I agree with your reasoning quoted below but I am still not able to solve Q2.

Quote:
If you add up the percents in each of the columns, you'll see that the total in each is GREATER than 100%, which means that some respondents believe that there are multiple benefits to having a website. Even if you had not noticed that though, the description refers to the survey asking respondents what they see as the potential BENEFITS (meaning possibly plural) of having a website (it does NOT state that each survey respondent selected "just one" of the potential benefits).


What I don't understand is how can we be sure that the two mentioned sets overlap. It is possible that the "GREATER" part is adjusted with the overlapping of other sets /captured benefits.
I am sure that I am missing some key points here and will appreciate if you can help me to identify it.
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Re: A company that designs websites   [#permalink] 14 Aug 2016, 04:14

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