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comment Selecting Subset of Quantitative Variables in R
Is it columns you want to subset, or rows? There are many ways to do either. Are particular columns next to eachother; or have similar names; or how else can you tell R which ones you want?
Feb
5
awarded  Revival
Jan
19
comment What type of regression will improve the prediction for these data?
maybe... OP's call. If they want to use R, fitting a gam is very nearly as simple as fitting the original regression, and is just a one-liner. I would think that adding polynomials or trigonometric functions by hand (some of the other suggestions) would be in fact more complex.
Jan
19
reviewed Close What is the answer to this Chebyshev's rule questions in statistics?
Jan
19
answered What type of regression will improve the prediction for these data?
Dec
28
awarded  Custodian
Dec
28
reviewed No Action Needed improve precision in text classification
Dec
28
reviewed No Action Needed Python Text Classification Features Engineering
Dec
28
reviewed No Action Needed Classifier with adjustable precision vs recall
Dec
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Dec
13
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Sep
20
revised Proving similarities of two time series
added 412 characters in body
Sep
19
comment Proving similarities of two time series
Thanks @user333700, I'll have a think.
Sep
18
comment Proving similarities of two time series
Thanks, it might help, but even then you can have identical acfs and two very different processes eg see ellisp.github.io/blog/2015/09/19/timeseries-same-acf . I'm pretty sure the answer requires multiple runs of each data generating black box and create a similarity statistic of some sort.
Sep
13
comment Suppose every family makes babies until a boy is born: will this result in gender bias in the society?
I've done an answer but won't post it until we know if this is homework or not (in which case I'll turn it into hints).
Sep
13
revised Proving similarities of two time series
linked to IrishStat reference to F statistic test of common parameters
Sep
13
answered Proving similarities of two time series
Sep
13
comment Proving similarities of two time series
Judging from the ARIMA results, the simulation values are for a stationary time series that fluctuates in the interval [-10, 10] (approximately). This doesn't look like a number of infections; or even a number of new infections. Have you transformed it, or taken differences twice, or something, before fitting auto.arima?
Sep
13
comment Proving similarities of two time series
What I'm puzzling about is how you simulated the results; presumably with a second model (I don't know how you could simulate them without a model). Unless you mean a physical simulation? I'd been presuming you were generating the simulation with a computer program ie a model. In which case who is to say it is better than the first model?
Sep
13
comment Proving similarities of two time series
This question has quite a lot of hypotheticals. Could you re-phrase it to what you actually are trying to do? A lot depends on what you mean by "similar". How was the simulation generated, if not already by a model? In which case why can't you analytically compare the two models? If they are differ, how do you know that says anything about the validity of the first model, rather than of the simulation?