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  1. K

    P.E Civil-tranpo depth help please?

    I had to print like 2000 pages and it was cheaper for me to just buy a ~$80 duplex laser printer, toner, and paper than have it printed somewhere else. In the end, you would still have a laser printer if your cost is a little more than having it printed elsewhere.
  2. K

    Has anyone else been told to avoid the structural pm?

    I do bridge design and I was told by my coworkers, most also do bridge design, not to take the Structural PM because it is hard and that I should take the Transportation PM. I decided to take the Structural PM because I think it will be more beneficial; If I don't pass, what I have learned while...
  3. K

    How did you study with young kids at home?

    I have a 23mo. old daughter when I took the exam on April 2012. I wanted to study and also spend time with my daughter because for me that is important. I started studying about 4 weeks before the exam, I went to our office building on Saturdays from about 11am to 8pm to study and my wife would...
  4. K

    NCEES Credential Evaluation Issues: Foreign Grad

    I have a similar experience but it is regarding transferring my education credits from a university in the Philippines to a university here in the United States. I was one year away from graduating and getting my BS in Civil Engineering in the Philippines when we moved here to the United States...
  5. K

    85th Percentile Speed Question

    Is there a way to edit a post if you make a mistake? 84.15 should be 85.15 and 84 being the 85th should be 86 being the 85th.
  6. K

    85th Percentile Speed Question

    I guess since there are different ways of calculating percentiles that give different results, then it will be hard to agree on the same answer; however the 85th fastest car in a sample size of 100 is not necessarily the 85th percentile in my opinion. If there are 100 numbers from 1 to 100 and...
  7. K

    85th Percentile Speed Question

    The first part of the equation quoted from Wikipedia is the following: One definition of percentile, often given in texts, is that the P-th percentile () of N ordered values (arranged from least to greatest) is obtained by first calculating the (ordinal) rank which suggests that the percentile...
  8. K

    85th Percentile Speed Question

    I must have typed it wrong, that 85.16th should have been 84.16th which is the same as 85/101. I am saying that the 85th percentile speed out of 100 sample vehicles is less than the speed of the 85th car. In order for the 85th car to be the 85th percentile, there should be 101 sample cars...
  9. K

    85th Percentile Speed Question

    Percentile definition: http://en.wikipedia.org/wiki/Percentile The 25th percentile is also known as the first quartile (Q1), the 50th percentile as the median or second quartile (Q2)… Median definition: http://en.wikipedia.org/wiki/Median In statistics and probability theory, median...
  10. K

    85th Percentile Speed Question

    Yes, statistically the 85th percentile speed will be 45mph; however, is it a good 85th percentile speed? What if the sample size of 100 vehicles is observed traveling at 100mph at a school zone? Will 100mph be considered as the new safe speed at that location? Another hypothetical question...
  11. K

    85th Percentile Speed Question

    I just became a member and this is my first post so I am not sure if I am doing this right. I will try to explain my point of view why I think C.43 is the more logical answer using the basic definitions. Below should be the table with the speed interval, frequency, and cumulative values...
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