Manhattan - Time management series

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Manhattan - Time management series

by gmatrant » Wed Nov 07, 2007 4:13 am
In the following link from Manhattan strategy section regarding time management.

https://www.manhattangmat.com/strategyseries19.cfm

The author refers to
1.Critical reasoning diagrams
2.Data Sufficiency grid
Can anyone share more light on this, especially the CR diagram.

2) REFLECT ON THE RESULTS
At this point, a common response from students is, “Okay, I’ve been keeping a time log and I’ve discovered that I am consistently behind on Data Sufficiency problems. I know that I’m working too slowly, but how do I fix that?” This is obviously a great question; awareness is one thing, but increasing speed is another. Speed comes when the problem solving process runs like a finely tuned machine. Have you practiced critical reasoning diagrams enough to make them second nature? Can you sketch a reading comprehension passage in your sleep? Do you immediately consider options for rephrasing, and do you automatically draw a grid, for data sufficiency problems? Do you search for splits and re-splits on sentence correction questions? Speed is all about process. If you find you’re losing too much time on any particular question type, reflect on, and rehearse, the process. Be sure to keep a time log as a measure of progress.
Source: — GMAT Strategy |

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I found some information on DS Grid, its there in the same link as the last entry.Can anyone give some information of CR diagrams.

THE DATA SUFFICIENCY GRID
The data sufficiency grid can help eliminate either 2 or 3 answer choices in a matter of seconds. Consider the following problem:

Is x > y?

(1) x = 3
(2) x2 = 9 and y2 = 16

Because of the sometimes tricky even exponents in statement (2), this problem could prove to be too difficult to answer in a time-short situation. However, we can use the data sufficiency grid to make some quick eliminations:

AD
BCE

If statement (1) is not sufficient, we can cross off the top row (A and D). If statement (1) is sufficient, we can cross off the bottom row (B, C, and E). To understand why this is true, review the stock answer choice explanations given with every data sufficiency question.

In this case, statement (1) can be evaluated quickly. Because statement (1) gives no information about y, it cannot possibly give us any information about the relationship between x and y. Statement (1) is not sufficient. Therefore, A and D can be eliminated. Our odds of choosing a correct answer are now 1 in 3, as opposed to 1 in 5.

While this is a simple example, it illustrates the power of the data sufficiency grid.