Cross Validated Questions, Problems & Solutions : TransWikia.com ~ Page 52

How to calculate the ACF and PACF for time series

I just started with time series analysis and I would like to know whether there is a formular for calculating the autocorrelation function (ACF) and the partial autocorrelation function (PACF)...

Asked on 02/28/2021 by PeterBe

2 answer

Represent Integer Categorical feature as both Numeric and Categorical

I'm dealing with tabular datasets where it's really hard to tell if the integer column is Numeric or Categorical. My main consideration is the accuracy of the model that...

Asked on 02/27/2021 by user2991421

0 answer

Determine the test statistic for each case

Consider a random sample of size $n$ from a normal distribution with unknown mean $μ$ and unknown variance $σ^2.$ Suppose the sample mean is $bar X$...

Asked on 02/27/2021 by mathslover

1 answer

Statistical test whether to use Sharp or Fuzzy Regression Discontinuity Design

Is there a statistical test that would allow me to test whether I should use a sharp or fuzzy regression discontinuity design? Intuitively, I can think of two decision rules:...

Asked on 02/27/2021 by misologie

1 answer

Conditional and unconditional expectation for the variance of error term in linear regression

I'm working through the book Introductory Econometrics and stumbled across a statement regarding the variance of the error term, $u$, of a linear regression model, ...

Asked on 02/25/2021 by mcgurck

1 answer

Python Fastai library - Loss and Validation interpretation

The following is a regression problem, where I have a dataset with composed by more than 40k consumption ids with some variables such as DateTime, month, year, temperature, humidity.I...

Asked on 02/25/2021 by La_haine

0 answer

How to estimate Standard error with delta method

I am estimating quantile ARDL model introduced Cho et al. (2015). I have Long-run parameter and variance-covariance matrix. How can I calculate standard errors using the delta method? Thank you....

Asked on 02/24/2021 by Özge

0 answer

Questions about GSADF and BASDF test's parameters

I'm in great need for help and I'll greatly appreciate any answer. I'm trying to implement those tests in RStudio, but the program tutorial asks among various things to input...

Asked on 02/24/2021 by Diricksen

0 answer

SVM-Light displays corrupted precision/recall results

I run SVM-Light classifier but the recall/precision row it outputs seem to be corrupted:Reading model...OK. (20 support vectors read)Classifying test examples..100..200..doneRuntime (without IO) in cpu-seconds: 0.00Accuracy on test set:...

Asked on 02/24/2021 by zvisofer

1 answer

bounds test for cointegration (Pesaran ardl)

I am new to cointegration, particularly in the context of ARDL. Central to that approach is the bounds test where the null is (I believe) no cointegration. What confuses me...

Asked on 02/23/2021 by user54285

2 answer

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