User Amonet

11

votes

3

answers

7k

views

Strategies for time series forecasting for 2000 different products?

Dec 4 at 15:22 kjetil b halvorsen♦ 53.5k

5

9

votes

2

answers

960

views

How is it possible to get a high $R^²$ & still have 'poor predictions'? [duplicate]

regression self-study linear-model prediction r-squared

Dec 28 '16 at 20:12 Community♦ 1

1

3

votes

1

answer

236

views

Is it correct to say that a z-value follows a standard normal distribution?

hypothesis-testing statistical-significance normal-distribution

Aug 23 '18 at 17:51 Alexis 22.3k

1

3

votes

2

answers

1k

views

Distribution of Y influenced by predictor X in simple linear regression?

regression linear-model

Dec 26 '16 at 19:28 Alecos Papadopoulos 50.9k

1

3

votes

2

answers

2k

views

Prediction interval with non normal data

regression multiple-regression

Dec 22 '16 at 1:17 Glen_b 245k

2

votes

1

answer

2k

views

Need help interpreting a chi-square Q-Q plot for multivariate normality

normal-distribution qq-plot chi-squared-distribution

Feb 6 at 12:36 kjetil b halvorsen♦ 53.5k

2

votes

1

answer

229

views

Does the sum of correlations make sense?

correlation panel-data cross-section

Aug 2 at 10:06 Community♦ 1

1

2

votes

1

answer

832

views

What time-series frequency should I use? Weekly, monthly, quarterly

time-series forecasting econometrics frequency

Jan 31 '19 at 15:33 Community♦ 1

2

votes

0

answers

111

views

Can the sum of several time-series be a white noise process, when the individual time series are not?

time-series forecasting econometrics white-noise

Jan 29 '19 at 8:03 Amonet 598

2

votes

1

answer

431

views

Bonferroni correction: how does it work?

statistical-significance multiple-comparisons bonferroni

Sep 3 '18 at 1:33 Frans Rodenburg 9,393

1

vote

1

answer

738

views

Consequences of unbalanced subgroups of categorical variables in logistic regression?

regression logistic unbalanced-classes stepwise-regression

Nov 19 at 17:39 kjetil b halvorsen♦ 53.5k

1

vote

3

answers

253

views

Kolmogorov-Smirnov test statistic interpretation with large samples

distributions kolmogorov-smirnov-test

May 17 at 0:25 carlo 3,735

1

vote

1

answer

189

views

Multiple linear regression: observations with 2 or more values per factor / categories - a problem?

multiple-regression categorical-data least-squares linear-model

Feb 6 '19 at 15:06 user2974951 4,571

1

vote

0

answers

204

views

Can a time series model be improved when the residuals are white noise?

time-series forecasting

Jan 29 '19 at 7:50 Amonet 598

1

vote

0

answers

69

views

How to code a categorical variable for logistic regression with overlap in the categories/subgroups?

regression logistic categorical-encoding

Jan 21 '19 at 20:21 Amonet 598

1

vote

1

answer

48

views

Main effect insignificant: should I estimate an interaction with it?

hypothesis-testing statistical-significance multiple-regression interaction

Aug 28 '18 at 3:05 Community♦ 1

1

vote

0

answers

62

views

How to adjust for the number of nested model tests?

hypothesis-testing statistical-significance multiple-comparisons likelihood-ratio nested-models

Jun 8 '18 at 21:28 Amonet 598

1

vote

0

answers

128

views

Chi-square difference test: how to adjust for the number of tests?

hypothesis-testing factor-analysis structural-equation-modeling bonferroni

May 29 '18 at 19:28 Amonet 598

1

vote

1

answer

475

views

Confirmatory factor analysis: insignificant item / manifest variable variances

factor-analysis structural-equation-modeling latent-variable lavaan

Apr 21 '18 at 2:32 Gregg H 3,201

1

vote

1

answer

740

views

Confirmatory factor analysis model identification

factor-analysis structural-equation-modeling confirmatory-factor identifiability

Mar 5 '18 at 4:03 Jeremy Miles 12.6k

1

vote

0

answers

348

views

Confirmatory factor analysis: using ML vs MLM estimator

categorical-data maximum-likelihood factor-analysis structural-equation-modeling confirmatory-factor

Mar 2 '18 at 20:57 Jeremy Miles 12.6k

0

votes

0

answers

10

views

Sample sizes estimation for testing two proportions (2 samples): power based vs rewriting confidence interval

hypothesis-testing sampling sample-size

Oct 1 at 9:09 Amonet 598

0

votes

1

answer

73

views

In OLS regression in R, how can I tell my model an observation is in my dataset more than once? [closed]

r regression time-series multiple-regression least-squares

Feb 7 '19 at 20:07 Amonet 598

0

votes

1

answer

2k

views

How to compute the proportion of variance explained by a variable while accounting for covariance?

variance covariance

Aug 26 '18 at 9:58 Amonet 598

0

votes

0

answers

85

views

How to compute the normalized Mardia kurtosis?

normalization kurtosis

Jul 8 '18 at 17:02 Amonet 598

0

votes

1

answer

819

views

Formula for standardized root mean square residual (SRMR) in longitudinal latent variable models (SEM, CFA)

goodness-of-fit structural-equation-modeling latent-variable confirmatory-factor

Apr 22 '18 at 14:23 Gregg H 3,201

0

votes

1

answer

433

views

Factor Analysis: magnitude of factor loadings changing over time

factor-analysis structural-equation-modeling confirmatory-factor

Mar 19 '18 at 3:34 Jeremy Miles 12.6k

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27 Questions

Strategies for time series forecasting for 2000 different products?

How is it possible to get a high $R^²$ & still have 'poor predictions'? [duplicate]

Is it correct to say that a z-value follows a standard normal distribution?

Distribution of Y influenced by predictor X in simple linear regression?

Prediction interval with non normal data

Need help interpreting a chi-square Q-Q plot for multivariate normality

Does the sum of correlations make sense?

What time-series frequency should I use? Weekly, monthly, quarterly

Can the sum of several time-series be a white noise process, when the individual time series are not?

Bonferroni correction: how does it work?

Consequences of unbalanced subgroups of categorical variables in logistic regression?

Kolmogorov-Smirnov test statistic interpretation with large samples

Multiple linear regression: observations with 2 or more values per factor / categories - a problem?

Can a time series model be improved when the residuals are white noise?

How to code a categorical variable for logistic regression with overlap in the categories/subgroups?

Main effect insignificant: should I estimate an interaction with it?

How to adjust for the number of nested model tests?

Chi-square difference test: how to adjust for the number of tests?

Confirmatory factor analysis: insignificant item / manifest variable variances

Confirmatory factor analysis model identification

Confirmatory factor analysis: using ML vs MLM estimator

Sample sizes estimation for testing two proportions (2 samples): power based vs rewriting confidence interval

In OLS regression in R, how can I tell my model an observation is in my dataset more than once? [closed]

How to compute the proportion of variance explained by a variable while accounting for covariance?

How to compute the normalized Mardia kurtosis?

Formula for standardized root mean square residual (SRMR) in longitudinal latent variable models (SEM, CFA)

Factor Analysis: magnitude of factor loadings changing over time