Two-Part Analysis: When Quant and CR eat the wrong type of mushrooms: GMAT Ninja Data Insights EP2

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This is session #2 of our full-coverage series on the Data Insights section of the new GMAT Focus Edition with GMAT Ninja. In this session, we will cover another challenging question type, Two-Part analysis, which covers a wide range of content, including quantitative, verbal, or some combination of both.
✅ Watch Other Episodes of Data Insights Series
EP1 Graphical Interpretation • Graphical Interpretati...
EP3 Table Analysis • Table Analysis: Embrac...
EP4 Multi-Source Reasoning • Multi-Source Reasoning...
EP5 How to Avoid Screwing Yourself on Data Sufficiency • How to Avoid Screwing ...
✅ Visit Data Insights Forum on GMAT Club for more practice questions gmatclub.com/f...

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✅ Subscribe to us on RU-vid www.youtube.co... & Get FREE 7-Day Access to our Premium GMAT Question Bank gmatclub.com/g...
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5 окт 2024

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Комментарии : 35

@harshachhpal1703 8 месяцев назад

For the last question - another logic can be as follows: 434-323 = 101, the increase 101 can only be justified if 11 fits (same odd-even reasoning) and 101-11 = 90, only divisible by 6. 101-33 = 68 (not divisible by any) 101-55 = 46 (same as 68) and 101 - 77 = 34 and lastly 101- 99. Potentially faster than the one u mentioned. Potentially faster way but it has its flaws

@SatishSahoo-s1h 17 дней назад

For the last question I was so doing algebra and wasn't getting anywhere and hearing Charles say "Algebra might not be your friend here", man I laughed so hard.

@tabishkazi6139 11 месяцев назад

if y is deciduous then x can either be red oaks or japenese maples. as we no both of them are subsets of deciduous.

@ashishsinha9035 4 дня назад

Thx !

@bijoymehta 6 месяцев назад

Hey Charles! for the last Q why can't it be 11 & 10? It does fit the requirement, A > C Yesterday's Sale: 11*3 + 29*10 = 323 Today's Sale: 11*4 + 38*10 = 424 It also helps us find an answer which is the multiple of 5. As per the equation '5Qa = 125' Am I missing something here? Also, thank you and the rest of the team for such helpful and easy to understand videos on your channel!

@abhaymn 6 месяцев назад

You haven't considered the number of tickets sold each day

@lynguyen2342 5 месяцев назад

Thank you this is super helpful

@Praewa-lg4kl 10 месяцев назад

For Q3, Cedar is the subset of Conifer meaning Cedar is less than Connifer. So, can the answer be X=A) Cedars ; Y=B) Conifers?

@gmatclub 10 месяцев назад

It would be great if you could post this question on forum. There is a greater chance that we will have some clarity by experts.

@lauralignola3620 2 месяца назад

same goes for red oak and deciduous...

@kunalpatil1842 9 месяцев назад

Hey Charles! Q3: The ratio of Conifers (32%) to Deciduous (~68%) would also be less than 1, right?

@akshatsharmasre 9 месяцев назад

I also have the same question

@aryapadhye4772 7 месяцев назад

True. But the first condition is that we need to be able to determine the ratio and it is not possible in case of conifers to deciduous dueto deciduous percent being approximate.

@fingeall6027 2 месяца назад

@@aryapadhye4772 'most' would imply the proportion of deciduous trees was a minimum of 34% (0.68/2). Given that the proportion of coniferous is known at 32%. It should be the case that the ratio of con:dec is always

@chauchau1354 7 дней назад

”most”. I made the same mistake.

@chauchau1354 7 дней назад

The last question, if it’s 8, then 8*33+(11-8)*Qc=323. Left side is diviable by 3, but right side, so elimate 8. Am I correct?

@abidsulficar8122 11 месяцев назад

This has been helpful. Thank you!

@gmatclub 11 месяцев назад

You're very welcome! Stay SUBSCRIBED.

@pranavdeepak5331 11 месяцев назад

Hi Charles &Team, In Q3: We know Cedars is a subset of Conifers; and there are other varieties of conifers - spruces & pines. So in this case of subset vs superset which are not overlapping sets - isn't answer choice A&B valid too?

@tabishkazi6139 11 месяцев назад

even this should work u are right

@soumyavijay3606 11 месяцев назад

not really because you cannot determine the actual ratio. The question states to find the ratio. Even though the ratio of Cedars/conifers will be less than 1,we do not know the exact number of cedars hence we cannot determine the exact ratio.DC is the correct answer

@user-qj8xd9ee8f 7 месяцев назад

one in eight = is that 1:8 or 1/8? If 1:8 it means 1/9. How should we differentiate? Thanks

@pranjalchoubey5929 3 месяца назад

It's 1 in 8 and not 1 after 8. Hope that helps :)

@chauchau1354 10 месяцев назад

Interesting,

@raeynaaa 10 месяцев назад

I don't understand why the answer of Q4 cannot be C & B. The increase in the population of the sea stars would result in a decline of phytoplankton and therefore the sea stars would start eating coral polys resulting in a decline of the coral reefs

@gmatclub 10 месяцев назад

Please check the official explanation of this question on this link. gmatclub.com/forum/naturalist-the-decline-of-coral-reefs-has-various-causes-one-contrib-317988.html#p2774751 If you still have follow up questions, you can post them in the same thread.

@idreesanis1733 9 месяцев назад

What you said could make logical sense, but i think the focus is what is the cause and what is the effect resulting in the decline; and the increase in sea stars is a the main effect that results the decline. Now what is the cause for that increase in sea stars?.. increase in Phytoplankton helping them thrive

@kamirtharaj6801 7 месяцев назад

The last question how frequent does it occur.....

@gmatclub 7 месяцев назад

It is likely to appear either as an experimental question or when you are doing really well and test is getting harder.

@CJPify 5 месяцев назад

in the official guy it says data insights is not adaptive

@Analyst2019pro 4 месяца назад

Less than what? 3 is missing a period

@aayushchakraborty2737 8 месяцев назад

data insights they r including biology terms unfair

@SaturdayMonk 11 месяцев назад

Why would a Bschool pick a candidate with 655 on focus edition vs 700 on old GMAT if they are trying to boost their average GMAT score. Very bizzare!!!!