Statistical Anomalies (by order of severity)

Question 1

Minor Anomalies

Answer 1

1) Multicollinearity
2) Extraneous Regressor
3) Serial Correlation
4) Spatial Correlation

Question 2

Moderate Anomalies

Answer 2

5) Suppressor Variables
6) Heteroskedasticity
7) Omitted Regressor / Model Misspecification
8) Regime Shift
9) Non-Linearity in Regressors
10) Non-Linearity in Parameters
11) Stochastic Regressors / Measurement Error

Question 3

Major Anomalies

Answer 3

12) Non-Stationarity
13) Invalid Restrictions
14) Binary Dependent Variable
15) Multinomial Nominal Dependent Variable
16) Multinomial Ordered Dependent Variable
17) Censored Dependent Variable
18) Truncated Dependent Variable

Question 4

List all anomalies in order:

Answer 4

1) Multicollinearity
2) Extraneous Regressor
3) Serial Correlation
4) Spatial Correlation
5) Suppressor Variables
6) Heteroskedasticity
7) Omitted Regressor / Model Misspecification
8) Regime Shift
9) Non-Linearity in Regressors
10) Non-Linearity in Parameters
11) Stochastic Regressors / Measurement Error
12) Non-Stationarity
13) Invalid Restrictions
14) Binary Dependent Variable
15) Multinomial Nominal Dependent Variable
16) Multinomial Ordered Dependent Variable
17) Censored Dependent Variable
18) Truncated Dependent Variable