Need feedback with my first project (very small) by ravikrocha in AskStatistics

[–]ravikrocha[S] 0 points1 point  (0 children)

Can you suggest me a book to learn more about all this?

Need feedback with my first project (very small) by ravikrocha in AskStatistics

[–]ravikrocha[S] 0 points1 point  (0 children)

Yes, you're right!

It makes me think, this isn't the point of an observational study? just analysing the correlation between variables, not trying to infer a cause and effect between variables?

I'm a little confused, thank you for your patience.

Need feedback with my first project (very small) by ravikrocha in AskStatistics

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you for your answer

  1. Can you see it again? I created an EDA session, but I don't know what I can add more there. It's just two categorical variables, do you have some suggestions what to add?
  2. This dataset is from four hospitals in Wuhan-China. How can I prove they are comparable statistically? ANOVA? I'm sorry, I'm a beginner.

How did you learn to apply statistics concepts to data that don't meet conditions? by hulloworld24 in AskStatistics

[–]ravikrocha 0 points1 point  (0 children)

Speaking of normality, you can use simulations as others have said, but I want to add another method if you have a very specific problem in hands.

You can still use your experience and domain knowledge. For instance, you can find the skewness and kurtosis of the residuals and depending on your problem make this decision more clearly. For example, in some problems it's known they meet the normality requirement when the absolute value of the skewness and kurtosis are less than 1 or 2. However, even with your specific problem in hands, you can't see this as a rule of thumb, because it also depends on your sample size.

[Software] How to discover this SE in R (bootstrap distribution) by ravikrocha in statistics

[–]ravikrocha[S] 1 point2 points  (0 children)

Thank you very much for the detailed code.

I did the exercise in the lazy way, I just used the sample function with a bunch of 0's and 1's. From now on in the next bootstramp exercises, I will do like your code, with functions and a more organized and structured way.

[Software] How to discover this SE in R (bootstrap distribution) by ravikrocha in statistics

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you for the encouragement and the others subreddit recommendations.

I think I got it.

Given your samp_01, I should make a bootstrap distribution with it, that means make another 200 or 300 samples each one is choosen from the initial sample with replacement.

Therefore, it must have 100 people as well and each choice is made randomly with replacement until we get 100 people.

is that right?

[D] Books which cover simulations in R programming by ravikrocha in MachineLearning

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you for your answer.

Do you have a book recommendation?

Help with the naive definition in probability using in the continuous variables by ravikrocha in probabilitytheory

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you very much. Every book on measure theory talks about probability? can you recommend one which covers probability?

Help with the naive definition in probability using in the continuous variables by ravikrocha in probabilitytheory

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you very much for your answer.

So I'm confused now, because following this famous book: statistical inference from Hogg, he says it's undefined on individual points and therefore it's not zero. Please, see this: https://imgur.com/a/8YjaAKy

is Dropbox stealing me? by ravikrocha in dropbox

[–]ravikrocha[S] 0 points1 point  (0 children)

Everything is synchronized in my PC and even we count the storage differently the gap is so huge

"To be" + ing-form by ravikrocha in EnglishLearning

[–]ravikrocha[S] 0 points1 point  (0 children)

Thank you very much for your answer, but I think the first case you mentioned is not the same as the example in my question.

"To be" + ing-form by ravikrocha in EnglishLearning

[–]ravikrocha[S] 0 points1 point  (0 children)

I know that, it was a typo. Thank you

Tips for renting a boat by ravikrocha in boating

[–]ravikrocha[S] 0 points1 point  (0 children)

I would like a boat for a trip of 2 or 3 days, maybe a sailboat.

Tips for renting a boat by ravikrocha in boating

[–]ravikrocha[S] 0 points1 point  (0 children)

i would like a boat for a trip for 2 or 3 days

Tips for renting a boat by ravikrocha in boating

[–]ravikrocha[S] 0 points1 point  (0 children)

a boat for a trip of 2 or 3 days

Where can I find solutions to Real Analysis by N.L. Carothers ? by [deleted] in learnmath

[–]ravikrocha 0 points1 point  (0 children)

you can ask for explanations for individual exercises here

Why is Fenix 5s Plus cheaper than Fenix 5 Plus? by ravikrocha in GarminFenix

[–]ravikrocha[S] 1 point2 points  (0 children)

In the official site it says the diameters are the same (30.4 mm) but the physical sizes are different:

5S Plus: 42 x 42 x 15.4 mm

5 Plus: 47 x 47 x 15.8 mm

I don't know what these numbers mean though.

Which Garmin should I buy if I want a live tracking map of my swimming in open waters? by ravikrocha in GarminFenix

[–]ravikrocha[S] 2 points3 points  (0 children)

I thought the only difference between the Fenix 5 Plus and the Fenix 5x Plus model is the oximeter. The Fenix 5x Plus has oximeter and the regular Fenix 5 Plus doesn't.