Suppose We Have a String Object Referenced by a Variable

question 26

Multiple Choice

Suppose we have a String object referenced by a variable called listing. Suppose we want a new String object that consists of the first 5 characters in listing. Which of the following lines of code will achieve this?

• A) String prefix = listing.front(5);
• B) String prefix = listing.front(6);
• C) String prefix = listing.substring(1,5);
• D) String prefix = listing.substring(0,5);
• E) String prefix = listing.firstChars(5);

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Definitions:

Unit Change

A change or difference of 1 unit in the value of a variable.

MSR

A term that could refer to various specific metrics or identifiers depending on the context; without further context, a precise definition cannot be provided. NO.

Degrees of Freedom

Represents the number of independent values or quantities that can be assigned to a statistical distribution, affecting the calculation of various statistical tests.

SSR

Sum of Squares due to Regression, a measure of the variation explained by the regression line.