Insert the Missing Code in the Following Code Fragment

question 32

Multiple Choice

Insert the missing code in the following code fragment. This fragment is intended to create an iterator to be used to process elements of a tree. TreeSet<String> aTree = . . .
String first = iter.next() ;
String second = iter.next() ;

• A) Iterator<String> iter = aTree.iterator<String>();
• B) Iterator<String> iter = aTree.iterator();
• C) Iterator<String> iter = String.iterator();
• D) Iterator<TreeSet> iter = aTree.iterator();

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Definitions:

Expected Value

The average outcome that one can expect to occur after many repetitions of a random experiment.

Error

A difference between a computed, estimated, or measured value and the true, specified, or theoretically correct value.

Prediction Interval

An estimate that provides a range within which a future observation is expected to fall, with a specified probability of the true value lying within this range.

Linear Regression

A mathematical technique that models the link between a dependent variable and one or more independent variables through fitting a linear equation to the data observed.