Value, which measures that how large is value of standard error in relevance to value of estimated coefficient is termed as

The correct answer is A. t-value.

The t-value is a statistical measure that is used to test the significance of a coefficient in a regression model. It is calculated by dividing the coefficient by its standard error. The t-value is used to determine whether the coefficient is statistically significant, which means that it is not likely to be due to chance.

The b-value is the estimated coefficient of a variable in a regression model. It is the measure of the relationship between the variable and the dependent variable. The b-value is not used to test the significance of the variable.

The d-value and c-value are not statistical terms.