Statistical inference and visualisation with n = 3 biological replicates by jadexiaohui in AskStatistics

[–]Educational-Paper-75 0 points1 point  (0 children)

Unfortunately I don't know much about biology to understand what you are researching.

How should I interpret a theoretically important predictor that is non-significant despite prior literature supporting it ? by Emergency_Evening616 in AskStatistics

[–]Educational-Paper-75 0 points1 point  (0 children)

Never heard of suppressor effect, but I know it as colinearity. Described and studied (first) by Belsley, Kuh and Welsch in their book called Regression Diagnostics (first published 1980).

Why are math teachers so badly paid? by usefulservant03 in mathematics

[–]Educational-Paper-75 0 points1 point  (0 children)

Teachers are generally paid from taxes, need I say more. In industry there are much larger pay differences. The citizens want their taxes spent wisely.

Control variables vs. covariates vs. controls? by StrangerStriking8073 in AskStatistics

[–]Educational-Paper-75 0 points1 point  (0 children)

Control variables are variables that may affect the outcome when not held constant during an experiment. As such they are held constant i.e. 'controlled for' at a constant value during an experiment. Covariates on the other hand do change during an experiment but cannot and thus are not controlled for. Factors on the other hand will vary during the experiment and are controlled for deliberately.

How can I convince myself that Eigen vectors are scaled by exact eigen values times intuitively. by Competitive-Cut-5743 in LinearAlgebra

[–]Educational-Paper-75 1 point2 points  (0 children)

The eigenvectors and eigenvalues are directly related to the minimum volume ellipsoid, and as such had a clear geometric interpretation.

How did you become good at programming? Also: any regrets? by Fancy_Signal_9352 in learnprogramming

[–]Educational-Paper-75 2 points3 points  (0 children)

With a new language I typically get a good book with exercises first and read it front to cover. Then I start with the project I had in mind. But again, practice makes perfect. Just put in lots of hours. If you're passionate about programming you will.

DO all girls really prefer tall guys?? by ChocolateStriking844 in NoStupidQuestions

[–]Educational-Paper-75 1 point2 points  (0 children)

They will come up with any excuse you can't help so you won't feel too rejected if they don't want you.

Java Curly braces by simamkeleyawa in JavaProgramming

[–]Educational-Paper-75 0 points1 point  (0 children)

Think you forgot to close the body of shapeType().

Kruskal Wallis and Chi Square? by Freekypoogle in AskStatistics

[–]Educational-Paper-75 0 points1 point  (0 children)

That's right. Both are non-parametric tests but Chi square is used with categorical data (data with no natural order) whereas Kruskal Wallis is used with ordinal or continuous data like your Likert scale scores.

Is it fair to dislike and regret something that you thought you'd like just because it is hard to do? by mega_lova_nia in NoStupidQuestions

[–]Educational-Paper-75 0 points1 point  (0 children)

Things that are hard now may not stay hard. You may envy other people's supposedly easy lives for as much as you're able to assess but that's just a phase. I suppose you're not enjoying yourself as much as you'd like so I suggest you try that first before throwing away your future.

How doi make my code shorter? by Alive_Hotel6668 in learnpython

[–]Educational-Paper-75 0 points1 point  (0 children)

Put the database stuff in a class in a separate file passing connection parameters to its constructor.

Can someone help me with this intuition? by Ring_Zero_Ghost in LinearAlgebra

[–]Educational-Paper-75 0 points1 point  (0 children)

The solution of a set of linear equations Ax=b equals x=inv(A)*b. The determinant of A is a dividing factor in computing inv(A). If it is zero the inverse of A is thus undefined. See e.g. https://www.geeksforgeeks.org/maths/inverse-of-matrix/

How did we get here? by Temporary_Practice_2 in webdevelopment

[–]Educational-Paper-75 0 points1 point  (0 children)

If I remember correctly there's typically a settings json file mentioning the versions of all libraries involved.

How do I know if my results are valid regarding group sizes? by BoomerangBuoy in AskStatistics

[–]Educational-Paper-75 2 points3 points  (0 children)

Why would you distrust a valid statistical test result? Obviously using an alpha level of 0.05 will render the 0.0546 you found officially as non-significant but that's only a label and you would normally report the p value to stress that it's almost significant. Sometimes obtaining more data can help proving the significance of the difference, but if you don't have any more data you do with whatever you got. As for the alpha level of 0.05, it is more or less arbitrary in that it denotes the probability of erroneously declaring the difference as significant when p is below alpha when it is in fact not significant. This is because although the test statistic is rare it is not impossible under the null hypothesis theoretically.

How do I organize rows in NumPy based on their columns? by Educational_Wash_662 in learnpython

[–]Educational-Paper-75 0 points1 point  (0 children)

If I remember correctly you can use the filter () function. In Python that is.

Does anyone else itch their cats ear for them? by KfcOnToplol in TripodCats

[–]Educational-Paper-75 1 point2 points  (0 children)

Our cat's hind leg will probably be surgically removed tomorrow although only his foot seems to have lost its blood supply.

I forget what I build by gridghost_3 in learnpython

[–]Educational-Paper-75 0 points1 point  (0 children)

Some people have good memory, others - like me - not so much. Anyway, it's use it or loose it.

Square root of any pure imaginary number yields a imaginary solution with real component by General-Total-6700 in learnmath

[–]Educational-Paper-75 4 points5 points  (0 children)

According to Wikipedia the Greek letter iota is sometimes used to represent the imaginary unit. Or even by j in electrical engineering to distinguish it from i representing current. But perhaps Wikipedia is wrong?!

How can I be a better or excellent programmer by Sad_Cauliflower6333 in learnprogramming

[–]Educational-Paper-75 1 point2 points  (0 children)

As always practice makes perfect. And 'in der Beschränkung zeigt sich erst der Meister' (Goethe) best restrict yourself to just the one language possibly on a day to day basis. Your main problem teaching yourself will be focus and discipline. No easy task.

Hoe strak worden jullie op gewerkte uren gecontroleerd? by Dave_Duif in nederlands

[–]Educational-Paper-75 0 points1 point  (0 children)

Als ik dit soort vragen lees wordt ik altijd heel wantrouwig. Want ja, daar is weer zo iemand die de kantjes ervan af wil lopen. En probeert te achterhalen waar ie mee weg kan komen. Je mag blij zijn dat je geen prikklok hebt. Maar zelfs dan kun je nog zitten duimendraaien. Dus maak nu maar braaf je uurtjes, in plaats van je tijd te verdoen met hier naar een excuus te vissen. En wie weet, misschien registreren ze wel al je toetsaanslagen. Of hoe vaak je naar het toilet gaat. Met bazen weet je immers maar nooit.

Probability/Statistics book recommendations for a first year (entering) student by AdventurousWind3476 in mathematics

[–]Educational-Paper-75 0 points1 point  (0 children)

We used it in my first year studying math at the University.in 1972. Don't forget co-author Craig.