2 problems wrong in a row = no big deal, and even 3 problems in a row (once) is not a huge deal, as long as it's not 3 in a row at the very end. 4+ is a definite problem.
But you also did have a string of 4 "wrong" in a row at the end, because you didn't attempt the last 4. Don't forget to add those to your list.
1 minute extra per question for 7 problems means I could have accomodated the 4 unanswered ones.
Bingo! That's why I want you to do the analysis yourself. That knowledge alone will help to prevent you from spending extra time next time, because you'll be able to tell yourself that you're likely just going to get it wrong anyway so let's stop now!
And you've narrowed it down even further. You tend to spend too much time on really hard PS problems. Good to know about yourself.
My problem is that I try hard to get a question right on the exam
So that mindset definitely needs to change. Read this article on time management and start doing what it says:
http://www.manhattangmat.com/blog/index ... anagement/WT: sets, rates, and work are not that common, so don't worry as much about them - just make sure not to LOSE time on them. Stats Qs are more common, so some work to be done to get better there.
In general on complex word problems with many moving parts (where we'd normally use tables), try drawing pictures instead. A lot of people struggle with tables but are able to set up the sequence of events correctly (using a table or other methods, such as systems of equations) if they have a very clear, concrete picture of exactly what is happening and when. Make it real - pretend you're the person or machine described in the problem. What's the first thing you do? What happens after that? Etc.
These two articles can help:
http://www.beatthegmat.com/mba/2011/05/ ... -into-mathhttp://www.beatthegmat.com/mba/2011/05/ ... ath-part-2For the NP questions on which you need to plug in values, you mention mostly DS. Draw a little number line and label -1, 0 and 1, then also make a little notation for the numbers between -1 and 0 and the numbers between 0 and 1. Finally, note "pos int" and "neg int" on the line. These are the most common major "categories" of numbers that do different things when you square them, divide by them, etc.
You can try whatever numbers you think of as long as those numbers are allowed by the problem. If they tell you x is positive, then you can try, say, 1/2, 1, and 2, but not 0, -1, and so on.
Try whatever you think of first and see what answer that gives you. If it's a value problem, it'll give you a number. If it's a yes/no problem, it'll give you a "yes" or a "no."
Then ask yourself: "what else am I allowed to try from my number line that I think might give me a *different* answer (either a different number, if it's a value question, or the opposite of yes or no, whichever I got with the first number I tried)." Then try that and see what happens. If you can get a different answer, then you know that piece of info was not sufficient.
Now, at first, you're not going to be great at thinking of what else you could try, because that's the point - you're struggling with this right now. So after the time is up, you need to go back and ask yourself "what kinds of numbers made a different here? and what clues are in the problem that would have remembered to try certain kinds of numbers?"
Of course, on some of these problems, it doesn't matter what you try - you keep getting the same answer. That's what happens when the info is sufficient, right? So you try 3 or 4 and you keep getting the same answer so you finally just say "ok, well I guess it's sufficient then." Afterwards, go back and ask yourself WHY - really dig into the theory of what's going on and try to understand why, no matter what you try, you're always going to get the same answer. And ask yourself how you could have figured that out / realized that while you were testing the numbers in the first place.
If you can do that, it will help you develop the skills to think through the theory on new problems as you test numbers, and then you'll be able to realize after testing a few numbers - oh, it looks like I'm always going to get the same answer no matter what because XYZ, so I can stop now. This statement is sufficient. (Though sometimes you still just have to say - well, I'm not 100% positive, but I do keep getting the same answer, so I'm going to go with it.)
On verbal, it does look like you didn't have to rush at the end, but I don't know what kinds of questions those were. And what were the other ones for your strings of wrong answers? Eg, you missed Qs 2 thru 5 (4 questions) and spent a total of 4.5m. What kinds of Qs were those? If all 4 were SC, the time was about right. If all 4 were CR, the time was way too fast. Probably it was a mix - what was the mix?
CR:
Draw Conc:
http://www.beatthegmat.com/mba/2009/10/ ... -questionsFind Assump:
http://www.manhattangmat.com/articles/CR-assumption.cfmEvaluate Sit:
http://www.beatthegmat.com/mba/2011/01/ ... on-problemRC:
http://www.beatthegmat.com/mba/2010/04/ ... mp-passagehttp://www.beatthegmat.com/mba/2010/07/ ... rc-passagehttp://www.manhattangmat.com/articles/a ... estion.cfmhttp://www.beatthegmat.com/mba/2010/09/ ... prehensionSC:
general process for all SC:
http://www.beatthegmat.com/mba/2010/06/ ... on-problemalternate process for really long / convoluted Qs with a lot of modifiers (only use when needed b/c this process takes longer):
http://www.beatthegmat.com/mba/2011/03/ ... sc-problemhttp://www.beatthegmat.com/mba/2011/03/ ... -problem-2I also like your plan to watch Ron's videos. And, yes, it's so important to be able to do this analysis! Not only does the analysis help tell you what to do, but it can help you get better. Now that you've seen that timing data, that's going to make it a little bit easier to let certain quant questions go!