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IrishStat's user avatar
IrishStat's user avatar
IrishStat
  • Member for 13 years, 4 months
  • Last seen more than a month ago
  • Warminster, PA, United States
6 votes

Where to find mathematical modeling help on low-budget project?

6 votes
Accepted

When was the autocorrelation function invented? And what was the motivation for it?

6 votes

Identifying periods of non random behavior in time series

6 votes

How can I check if my time series data is zero mean, stationary and independent identically distributed?

6 votes
Accepted

Arima model giving high forecast values

6 votes
Accepted

What common forecasting models can be seen as special cases of ARIMA models?

6 votes

Time series and anomaly detection

5 votes

auto.arima warns NaNs produced on std error

5 votes

How would you fit ARIMA model with lots of autocorrelations?

5 votes

Seasonally adjusted month-to-month growth with underlying weekly seasonality

5 votes

STL on time series with missing values for anomaly detection

5 votes
Accepted

How to find similarities between time series?

5 votes
Accepted

Forecasting nonstationary time series

5 votes

What "more" does differencing (d>0) do in ARIMA than detrend?

5 votes

What method can be used to detect seasonality in data?

5 votes

Can I trust a regression if variables are autocorrelated?

5 votes
Accepted

How to do Chow test for constancy of parameters across 2 groups

5 votes

What is the term for a time series regression having more than one predictor?

5 votes

Cross-validating time-series analysis

5 votes

Using lead-lag relationships for time series prediction

5 votes
Accepted

How to calculate the p-value of parameters for ARIMA model in R?

5 votes
Accepted

What's the best formula to fit the distribution of website user number over a day

5 votes

Testing for stability in a time-series

5 votes
Accepted

How can I recognize when I must apply "log transformation"?

5 votes
Accepted

Use ACF and PACF for irregular time series?

5 votes

How to interpret and do forecasting using tsoutliers package and auto.arima

5 votes
Accepted

Multiple ARIMA models fit data well. How to determine order? Correct approach?

5 votes

Data mining techniques in R for advertising and sales data

5 votes

what if the residual series from arima() not looks normal?

5 votes

Capturing seasonality in multiple regression for daily data

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