Variable-Length Records Have Characteristics That Are Not Found in Fixed-Length

question 96

Multiple Choice

Variable-length records have characteristics that are not found in fixed-length records.An example of such a characteristic is

• A) the field width can be adjusted for each data occurrence.
• B) because of their size, most records stored on DASD are variable-length records.
• C) the actual number of fields can vary from one data occurrence to another.
• D) the field width can be adjusted for each data occurrence and the actual number of fields can vary from one data occurrence to another.

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Definitions:

Predictor Variables

Predictor variables are independent variables in statistical models that are used to predict outcomes or influences on a dependent variable.

Linear Regression Equation

A mathematical expression defining a direct relationship between a single dependent variable and several independent variables.

Best Fit

A line or curve that represents the best approximation of a set of data points, often determined by minimizing the differences between the estimated and observed values.

Variables

Elements, features, or factors that are liable to vary or change within the context of a scientific study or experiment.