Testing Definition and 634 Threads

A test or examination (informally, exam or evaluation) is an educational assessment intended to measure a test-taker's knowledge, skill, aptitude, physical fitness, or classification in many other topics (e.g., beliefs). A test may be administered verbally, on paper, on a computer, or in a predetermined area that requires a test taker to demonstrate or perform a set of skills.
Tests vary in style, rigor and requirements. There is no general consensus or invariable standard for test formats and difficulty. Often, the format and difficulty of the test is dependent upon the educational philosophy of the instructor, subject matter, class size, policy of the educational institution, and requirements of accreditation or governing bodies.
A test may be administered formally or informally. An example of an informal test is a reading test administered by a parent to a child. A formal test might be a final examination administered by a teacher in a classroom or an IQ test administered by a psychologist in a clinic. Formal testing often results in a grade or a test score. A test score may be interpreted with regards to a norm or criterion, or occasionally both. The norm may be established independently, or by statistical analysis of a large number of participants.
A test may be developed and administered by an instructor, a clinician, a governing body, or a test provider. In some instances, the developer of the test may not be directly responsible for its administration. For example, Educational Testing Service (ETS), a nonprofit educational testing and assessment organization, develops standardized tests such as the SAT but may not directly be involved in the administration or proctoring of these tests.

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  1. C

    Testing Iron Ions in Oxygen Absorbers

    how to test the component inside oxygen absorber in food?? we guess that there may be iron(II) or iron(III) ion. we use reducing agent or oxidzing agent to test it ? however, if both of them exist in the oxygen absorber, how can we distinguish them?? :confused:
  2. W

    How can I improve the accuracy of neoprene tear testing?

    Hello - I am working on a test for different neoprene mixtures. The set up is two jaws that clamp across the width of a strip of neoprene. One jaw is attached to a stationary post, the other is attached to a cylinder able to apply a variable pulling force. The problem I am having is...
  3. DaveC426913

    Testing IR Sensitivity: My Experiment

    I learned https://www.physicsforums.com/showthread.php?p=1098513&posted=1#post1098513" that some people are sensitive to lower frequency light than others. In fact, some people can see well into the infrared range. I was very skeptical, so I tested it out. I was right, I cannot see IR...
  4. A

    How to determine the width of the zone of acceptance in hypothesis testing?

    First and foremost, I am terrible in Stats so bear w/ me on this one. This is my question, if anyone has an idea on how to figure out this problem that would be great! Here it is: Suppose you flip a coin 100 times and you want to test the hypothesis that the coin is fair, making sure there is...
  5. H

    Testing Continuity with a Voltmeter

    Please excuse my ignorance, but I could use some assistance. I need to get a device that will test if current can pass from an electrode through a connected wire on down to a pin that connects to a computer port. (Sometimes the electrical connection fails because of a poor connection between the...
  6. S

    Testing Silicon Wafer: Predictions & V-I Characteristics

    Hi, my labmates and I are trying to fabricate a functional organic semiconductor; however we are having problems indicative of surace leakage between the gate and drain, or oxide breakdown (Fowler-Nordheim or otherwise). So now we're trying to test our silicon wafer without the organic...
  7. L

    Schools Can I Test Out of College and Still Get a Degree in Science and Math?

    I know they have tests where you can take the test and if you pass you don't have to take the course. I was wondering, if I educated myself enough on physics through books and videos as well as Math could I take tests to get credits for courses and get a degree froma college? cience and...
  8. E

    Is a Point Inside a Triangle? Testing for Inclusion on a 2D Plane

    Hi, how do I test if a point is inside a triangle? The point is assumed to be in the triangle's plane.
  9. wolram

    Testing relativity and_________

    http://arxiv.org/abs/astro-ph/0606641 Sorry link will not post abstract?
  10. G

    Simulating Solar Panels Under Sunlight

    I have an interesting question: Could we simulate the solar array operating under sunlight, by covering the solar panel with dark paper and using a constant current source to pass rated current INTO the solar panel (e.g. using a bench power supply on constant current mode with a DC link...
  11. M

    RS422/RS485 Testing - Answers to Questions & Networking Forum Suggestions

    Hi all, The system is RS422 and need a RS422-to-RS232 converter to download source from the system to the RS232 terminal. Question # 1: I usually use my laptop to test RS232 loopback. The laptop doesn't support RS422, so how to test to see if the RS422-to-RS232 is working...
  12. K

    VOR Circuit Test: Learn More About Aviation Testing

    Hi,:cool: I really confuse about VOR circuit test of couse I mean for aviation, I want to know how is it working? If anyone has idea about that Please tell me.:frown: Thx a lot :rolleyes:
  13. B

    Primality Testing: Solve Problem with Incongruency of xj^(n-1)/pj Modulo n

    I'm having trouble with this problem Let n be a positive integer. Show that if the prime-power factorization of n-1 is n-1=(p1)^(a1)*(p2)^(a2)*...*(pt)^(at) , and for j=1,2,...,t, there exists an integer xj such that (xj)^(n-1)/(pj) is incongruent to 1(modn) and...
  14. A

    Human Eye Resolution: Testing Light Levels

    hi, I've just done an experinemt to try and show the resolution of the human eye in different light levels. i did it by putting a 0.25mm apart slits in a tube then, behind it had an adjustbable light, then i moved the slit further back, and asked them to say if they could see the two slits...
  15. S

    Testing Animal Intelligence: Methods and Challenges

    How do they test anmials intellgence?I herd of the resarch that dogs could do math,some langue and liture(I think).How do they test that.
  16. N

    Programs for testing of randomness

    Hello! Do you know any programs that can test randomness of pseudorandom sequences of real numbers?
  17. G

    What's a device for testing lightwave emission?

    I'm looking forward to doing some photography projects indoors, but I'm having a hard time differing between sources of light around me. I suspect that the lighting system in my basement is not as bright as I suspect it to be. Thus, I came to the conclusion that the upstairs room was a lot...
  18. Astronuc

    Literacy Falls for Graduates From College, Testing Finds

    This is troubling, since the state and federal governements like to tout their successes in education. NY Times, Dec 16, 2005
  19. B

    Hovercraft Science Fair Project: Testing Air as a Friction Reducer

    sorry if this isn't the place for this. for a science fair on hovercrafts. would the problem be something like needing a method of reducing friction between the vehicle and the surface it's running on. so would the hypothesis be something like 'air can act as a fricition reducing lubricant'...
  20. C

    Practical pseudoprimality testing

    I'm working on a problem that includes testing large numbers for primality. I'm using Pari/GP's built-in Baillie-PSW pseudoprimality test, but it (understandably!) runs slowly. I have some qustions, then: * I've been sieving the small prime factors from these numbers. For numbers if the...
  21. J

    Testing Poiseulle's Law: Flow Rate vs Length

    Hi; Could someone please help me with this question: "Suppose you have measured the flow rate for a number of tubes with different lengths but the same radius, how would you graph your data to test Poiseulle's law (Hint: choose the scales of the axes so that the theoretical graph is a straight...
  22. L

    Unlocking Your DNA: Understanding Genetic Testing and What It Reveals About You

    I want to know about knowing my DNA makeup. How can I get a skematic of my DNA and tell oll about me. Stuff like my racial makeup intelligence disease inherted things sexuality life expectancy traits habitual behavior strongpoints weaknesess.
  23. J

    Testing Phenotypic Ratios: Results of Chi Square Test

    Hi, My Question: Problem 1. The expected phenotypic ratios for each of the crosses below is 1:1. Determine whether the observed ratios are differ significantly (p < 0.05) from the expected. I used a Chi Square test to help me determine that answer and found the there is no probability of...
  24. T

    Probability and Hypothesis Testing Problem

    I need some help with a problem. Let me first post the results. 289 (10 lottery ball random draws) = 4.66 ave...5.50 mean 67 (9 lottery ball random draws) = 3.30 ave...5.00 mean 49 (8 lottery ball random draws) = 4.08 ave ...4.50 mean 37 (7 lottery ball random draws) = 3.00 ave...4.00 mean...
  25. T

    Recommend me electronics testing equipment

    What I really need is an analogue function generator of some sort. Right now I am using a tektronix cfg250 which can put out up to 2mhz frequencies (square, sine, sawtooth, etc). Is there anything similar to this? I don't want anything with a screen on it...but it looks like tektronix doesn't...
  26. W

    Courses What's the difference between self-teaching and taking courses in college?

    I am a freshman in college with a double major. Most of what I know I am self taught in. I have talked to different professors about what courses I should take and some of them recommended taking courses that I already know. Some said to do this for an easy A and this does make sense. But others...
  27. A

    Backyard Method for Testing Adhesive Strength

    Hey, does anyone know a backyard method for testing adhesive strength? Need to compare the strength of things like sellotape/masking tape. Cheers A
  28. wolram

    Testing the Limits of Fine Tuning

    Remember it is a very fine tunning job, and can all the inner and outter perturbances be damped out? i put my money on a null result.
  29. A

    Symmetry Testing: Solutions to 2 Equations

    Here's 2 more I am having difficulty with, I'll show you what I came up with or what I think the answer is 1. 2x = 3y^2 (sqrt 2x/3) = 3y/3 y = sqrt (2x/3) Symmetric to the X-axis 2. x^2 + 4y^2=16 not symmetric to any axis
  30. A

    Probability/Hypothesis testing help

    I need help on some questions: The first two seem really easy, but i can't seem to figure out the right approach: Marks in ECMB11 are normally distributed with a mean of 70% and standard deviation of 10%. Suppose an A is a mark of 80% or more. 1. If you take a sample of 120 students, what...
  31. S

    The Star Method for Testing Syllogisms

    I'm working though Introduction to Logic by Harry Gensler in which he presents his own invention for testing syllogisms-the star method. I was wondering how common this method is in comparison to Venn diagram methods. It's much quicker than Venn diagrams to use, but the beginning student is at a...
  32. A

    Hypothesis testing and the power of the test

    I am having trouble understanding the concept of the power of the test. Here is a sample question with solution: A company wants to test if average weekly demand is more than 2000 lbs. Test is to be carried out at 5% level of significance, and an estimate of the population variance is...
  33. C

    Hypothesis testing with normal distribution

    Hypothesis testing with normal distribution... I've been learning about Hypothesis testing with normal distribution, but I don't understand the need for the significance level. By this I mean that i understand that according to the Central Limit Theorem a distribution of the means will be a...
  34. E

    Testing Your Color Vision: What Do You See?

    Hi all, I'm just curious what you see on these testimages: http://www.toledo-bend.com/colorblind/Ishihara.html http://en.wikipedia.org/wiki/Color_blindness When I was in school, our biology teacher asked us what we see and there were 2 out of 24 pupils who couldn't see the red 8. I...
  35. marcus

    Lorentz violations at high energy (the state of testing)

    http://arxiv.org/abs/astro-ph/0505267 Lorentz violation at high energy: concepts, phenomena and astrophysical constraints Ted Jacobson, Stefano Liberati, David Mattingly 56 pages, 3 figures, Invited article for Annals of Physics "We consider here the possibility of quantum gravity induced...
  36. V

    Testing hypothesis and significance level

    Let N be the number of flips of a coin up to an including the first flip of heads. Develope a significance test for N at the alpha=0.1 to test the hypothesis H that the coin is fair. Can someone please help me with this statistics problem? I have no clue how to start it. Thank you :smile:
  37. M

    Testing convergence of a series

    \sum_{n=1}^\infty \frac{cos n}{n^2} Now, which test should i try? It doesn't appear to be anything straightforward like ratio test, comparison test etc and it's not a straightforward limit. cos(n) goes negative too, so that complicates things. Can anyone offer me any advice on a problem...
  38. C

    Failure theories and uniaxial testing

    in all the failure theory we compare the stress in the structure to the yield stress in the uniaxial testing. How this is valid? for example in a structure the max normal stress is sigma x. and we compare this with the maximum normal stress in a uniaxial tension test. in vonmises also...
  39. P

    Testing Convergence: Comparison & Limit Comparison Tests

    Test each of the following series for convergence by either the Comparison Test or the Limit Comparison Test. \sum_{n=1}^\infty \frac{2n^4}{n^5+7} this diverges using the p-series and comparison test right? p <1 \sum_{n=1}^\infty \frac{2n^4}{n^9+7} and this converges right? because p >...
  40. C

    Can a New Gravity Theory Rival Einstein's Predictions?

    We all know that Einsteins GTR accounts for observations that Newtonian gravitation cannot account for. I have "created" a theory of gravity (I put created in quotes becase it feels more like I found it) that makes corrections to Newtonian gravity in the same extreme relativistic cases. (this...
  41. F

    Statistics Help Testing a Claim with Two Proportioins

    I need help on a statistics problem. The problem is stated below. A clerk in the county office where marriage licenses are issued claims that there is an upward trend in women marrying men that are at least one year or more younger than the woman. A random sample of two hundred marriages in...
  42. D

    Most interesting things about wind tunnel testing

    hey u lil smart asses, I have to start a really important project in like 2 days, (extended essay for those ex ib) and i have to investigate on airfoils in a wind tunnel, basically i have a lot of choice. I thought I could design a four-digit naca airfoil (tho it seems really complicated)...
  43. D

    Most interesting things about wind tunnel testing

    hey all of you lil engineering smart asses, I have to start a really important project in like 2 days, (extended essay for those ex ib) and i have to investigate on airfoils in a wind tunnel, basically i have a lot of choice. I thought I could design a four-digit naca airfoil (tho it seems...
  44. S

    Question about hypothesis testing

    i'm getting my concepts very confused now... so the formula for the normal distri is (y - u)/(sigma)/((sqroot(n)). so if I want to test y, I set that formula = to alpha(where alpha is the confidence level). that is if it is one sided. if it is 2 sided, do I still set it to alpha, or...
  45. wolram

    Testing gravity theories with Anti atoms

    http://xxx.sf.nchc.gov.tw/pdf/hep-ex/0503034 This paper is a review of anti hydrogen production, and how it could be used to test gravity theories.
  46. J

    Testing Compounds in Foods: Lipid, Protein, Sugar, Starch

    Hi we did a lab today for testing compounds in foods... So basically the only way to detect if a lipid is present is by transparency? Like we used a paper towel, we added a few drops of the substance to the paper towel and then rubbed it today, if it was transparent it tested positive for...
  47. C

    Merge and MergeSort Algorithms for Sorting Arrays in Java

    Hello all Let's say we have the following classes: public class Merge { protected static void merge(int[] a, int first, int last, int middle) { int i, j, k; int[] tempArray = new int[a.length]; i = first; j = first; k = middle + 1...
  48. quasar987

    Testing the Postulate of Special Relativity

    Here's postulate (13.1) now... First of all what does he mean by "distinguish"? And why would that be in contradiction with the postulate of SR? Thanks.
  49. N

    Testing cosmology, without assuming GR?

    Regular readers to GA&C here in PF will know only too well that some of our prolific posters feel the mainstream work is rather too heavily model-laden for their taste ... and others that this characterisation quite unfair. Wrt those who are comfortable with the redshifts of galaxies (and SN)...
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