If X_it Is Correlated with X_is for Different Values of S

question 32

Multiple Choice

If X_it is correlated with X_is for different values of s and t, then

• A)X_it is said to be autocorrelated
• B)the OLS estimator cannot be computed
• C)statistical inference cannot proceed in a standard way even if clustered standard errors are used
• D)this is not of practical importance since these correlations are typically weak in applications

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Definitions:

Confidence Interval Estimate

A statistical method used to express the uncertainty associated with a sample statistic by specifying an interval likely to encompass the true population parameter.

Standard Error

A statistic that measures the accuracy with which a sample distribution represents a population.

Sample Size

The number of observations or replicates included in a sample from a population for the purpose of statistical analysis.

Correlation Coefficient

A numerical measure that quantifies the degree of relationship or dependence between two variables, typically ranging from -1 to 1.