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1. Top results related to what does it mean when the odds ratio is 1?

   • What does it mean when the size of a VARCHAR2 in Oracle is declared as 1 byte?

     Top Answer

     Answered May 23, 2017 · 29 votes

     You can declare columns/variables as varchar2(n CHAR) and varchar2(n byte).

     n CHAR means the variable will hold n characters. In multi byte character sets you don't always know how many bytes you want to store, but you do want to garantee the storage of a certain amount of characters.

     n bytes means simply the number of bytes you want to store.

     varchar is deprecated. Do not use it. What is the difference between varchar and varchar2?

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     1/5

   • What does it mean when it is stipulated that extra allowed space is O(1)?

     Top Answer

     Answered Jun 24, 2014 · 27 votes

     If the depth of the stack (recursion) is constant and does not change with respect to the size of the input, then a recursive solution can be O(1) extra space.

     Some compilers may do tail call optimization (TCO) and remove recursive calls if they are the last statement executed in any given code path through a function. With TCO, there is no call-stack related memory overhead.

     However, keep in mind that the O(1) constraint may be being imposed to force you to choose a particular (probably non-recursive) algorithm, so relying on tail call optimisation may be unwise even if you know the compiler you are using has made the relevant transformation to your code. At the very least, if you rely on it, you should say so explicitly and justify your expectation that TCO will occur by reference to language specifications, compiler documentation and/or disassembly as appropriate.

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     2/5

   • What does it mean when the first "for" parameter is blank?

     Top Answer

     Answered Dec 29, 2009 · 23 votes

     It just means that the user chose not to set a variable to their own starting value.

     for(int i = 0; i < x; i++)-

     is equivalent to...

     int i = 0;for( ; i < x; i++)

     EDIT (in response to comments): These aren't exactly equivalent. the scope of the variable i is different.

     Sometimes the latter is used to break up the code. You can also drop out the third statement if your indexing variable is modified within the for loop itself...

     int i = 0;for(; i < x;){...i++...}

     And if you drop out the second statement then you have an infinite loop.

     for(;;){runs indefinitely}

     Other Answers

     Answered Dec 28, 2009 · 8 votes

     The for construct is basically ( pre-loop initialisation; loop termination test; end of loop iteration), so this just means there is no initialisation of anything in this for loop.

     You could refactor any for loop thusly:

     pre-loop initialisationwhile (loop termination test) {...end of loop iteration}

     Other Answers

     Answered Nov 15, 2016 · 3 votes

     Some people have been getting it wrong so I just wanted to clear it up.

     int i = 0;for (; i < 10; i++)

     is not the same as

     for (int i = 0; i < 10; i++)

     Variables declared inside the for keyword are only valid in that scope.

     To put it simply.

     Valid ("i" was declared outside of the loops scope)

     int i = 0;for (; i < 10; i++){ //Code}std::cout << i;

     InValid ("i" does not exist outside the loop scope)

     for (int i = 0; i < 10; i++){ //Code}std::cout << i;

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     3/5

   • What does it mean when the MSI log file says "Note: 1: 2729"?

     Top Answer

     Answered Jan 10, 2011 · 7 votes

     Checkout:

     How to Interpret Windows Installer Logs

     Windows Installer Error Messages

     Q107675: ERRDOC: Windows Installer Error 2729

     Code 2729 is "Install engine not initialized."

     There's very little out on this but my best read of this error code is that the msiexec client side is trying to spin up the msiexec server side ( windows service ) and it's going through a loop logging that it isn't up and running yet. After a few iterations it's up and the install continues. Take a look at the following log snippet and tell me if this is pretty much what your log looks like.

     MSI (c) (A4:DC) [22:12:14:406]: Package name extracted from package path: 'msse.msi'MSI (c) (A4:DC) [22:12:14:406]: Package to be registered: 'msse.msi'MSI (c) (A4:DC) [22:12:14:406]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:437]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:437]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:437]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2729 MSI (c) (A4:DC) [22:12:14:453]: Note: 1: 2262 2: AdminProperties 3: -2147287038 MSI (c) (A4:DC) [22:12:14:453]: TRANSFORMS property is now: MSI (c) (A4:DC) [22:12:14:453]: PROPERTY CHANGE: Adding VersionDatabase property. Its value is '200'.

     PS- The (c) after MSI means the log entry originated from client side. Also you might find this utility helpful:

     Wilogutl.exe (Windows)

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     4/5

   • What does it mean when an operation "approaches O(1)" as opposed to "is O(1)"?

     Top Answer

     Answered Nov 14, 2013 · 10 votes

     If the hash function used by the underlying objects in the hash code is "good" it means collisions will be very rare. Odds are good that there will be only one item at a given hash bucket, maybe two, and almost never more. If you could say, for certain, that there will never be more than c items (where c is a constant) in a bucket, then the operation would be O(c) (which is O(1)). But that assurance can't be made. It's possible, that you just happen to have n different items that, unluckily enough, all collide, and all end up in the same bucket, and in that case, ContainsKey is O(n). It's also possible that the hash function isn't "good" and results in hash collisions frequently, which can make the actual contains check worse than just O(1).

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2. People also ask

   What is the difference between odds against and odds against?

   • Any odds in which the first number is bigger than the second are odds against, while any odds in which the first number is smaller than the second are odds on. Odds-on events are considered more likely to happen than not by bookmakers, and vice versa for events that odds against.

   Betting odds explained: guide to how betting odds work - The Telegraph

   www.telegraph.co.uk/betting/sports-guides/betting-odds-explained/

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   What happens if the odds of an event increases by 1?

   • It is the log-odds of the event that , when the predictors . By exponentiating, we can see that when the odds of the event that are 1-to-1000, or . Similarly, the probability of the event that when can be computed as means that increasing by 1 increases the log-odds by . So if increases by 1, the odds that increase by a factor of .

   Logistic regression - Wikipedia

   en.wikipedia.org/wiki/Logistic_regression

   See all results for this question

   What are betting odds?

   • Betting odds are compiled by bookmakers as a way to represent what they believe is the likelihood is of an event or events happening. These odds are usually represented as either a fraction (2/1) or a decimal (3.0), which is used in the UK and around Europe.

   Betting odds explained: guide to how betting odds work - The Telegraph

   www.telegraph.co.uk/betting/sports-guides/betting-odds-explained/

   See all results for this question

   What happens if odds increase by a factor of 1?

   • So if increases by 1, the odds that increase by a factor of Note how the effect of on the log-odds is twice as great as the effect of , but the effect on the odds is 10 times greater. But the effect on the probability of is not as much as 10 times greater, it's only the effect on the odds that is 10 times greater.

   Logistic regression - Wikipedia

   en.wikipedia.org/wiki/Logistic_regression

   See all results for this question

3. www.underdogchance.com › what-do-betting-ratios-meanWhat Do Betting Ratios Mean? Mastering Betting Odds for Big Wins

   www.underdogchance.com › what-do-betting-ratios-mean

   • Cached

   1 day ago · For example, a bet of €10 at 3.50 odds returns €35 (10 x 3.50). For moneyline odds, positive odds indicate how much you win on a $100 bet. For instance, +250 means a $100 bet returns $250 in profit. Negative odds show how much you need to stake to win $100. For instance, -200 means you need to bet $200 to win $100.

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5. en.wikipedia.org › wiki › Logistic_regressionLogistic regression - Wikipedia

   en.wikipedia.org › wiki › Logistic_regression

   • Cached

   May 23, 2024 · In simple terms, if we hypothetically get an odds ratio of 2 to 1, we can say... "For every one-unit increase in hours studied, the odds of passing (group 1) or failing (group 0) are (expectedly) 2 to 1 (Denis, 2019).

6. www.geeksforgeeks.org › odd-ratioOdd Ratio: Definition, Formula, Calculation, Interpretation ...

   www.geeksforgeeks.org › odd-ratio

   • Cached

   May 21, 2024 · To interpret the odds ratio: OR = 1: The odds of the event are the same in both groups. OR > 1: The odds of the event are higher in Group 1 compared to Group 2. OR < 1: The odds of the event are lower in Group 1 compared to Group 2. Suppose we have two conditions: Condition A (Group 1) and Condition B (Group 2).

7. www.telegraph.co.uk › betting-odds-explainedBetting odds explained: guide to how betting odds work

   www.telegraph.co.uk › betting-odds-explained

   • Cached

   May 21, 2024 · The probability of getting heads is a one in two chance, which can be represented as odds of 1/1, which would mean the outcome has a 50% chance of winning. This is how punters can use the...

   • Author: Connor Whitley

8. scales.arabpsychology.com › stats › what-is-theWhat Is The Complete Guide For Reporting Odds Ratios?

   scales.arabpsychology.com › stats › what-is-the

   • Cached

   May 11, 2024 · In statistics, an odds ratio tells us the ratio of the odds of an event occurring in a treatment group compared to the odds of an event occurring in a control group. When reporting an odds ratio, we typically include the following: The value of the odds ratio. The confidence interval for the odds ratio.

   • Phone: 7.7B

9. www.winnerswire.com › how-do-i-calculate-oddsHow Do I Calculate Odds? - Winners Wire

   www.winnerswire.com › how-do-i-calculate-odds

   • Cached

   May 2, 2024 · The odds ratio is the ratio of the probability of an event occurring to the probability of it not occurring. For example, if the probability of heads is 50%, then the odds of heads is 1:1. This means that for every 1 time the coin lands on heads, it will land on tails 1 time.

10. www.theanalysisfactor.com › what-is-logit-functionWhat is a Logit Function and Why Use Logistic Regression?

    www.theanalysisfactor.com › what-is-logit-function

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    May 13, 2024 · The logit function is the natural log of the odds that Y equals one of the categories. For mathematical simplicity, we’re going to assume Y has only two categories and code them as 0 and 1. This is entirely arbitrary–we could have used any numbers. But these make the math work out nicely, so let’s stick with them.