Which of the Following Sets of Statements Creates a Multidimensional

question 28

Multiple Choice

Which of the following sets of statements creates a multidimensional array with 3 rows, where the first row contains 1 value, the second row contains 4 items and the final row contains 2 items?

• A) int[][] items;
• Items = new int[3][?];
• Items[0] = new int[1];
• Items[1] = new int[4];
• Items[2] = new int[2];
• B) int[][] items;
• Items = new int[3][];
• Items[0] = new int[1];
• Items[1] = new int[4];
• Items[2] = new int[2];
• C) int[][] items;
• Items = new int[?][?];
• Items[0] = new int[1];
• Items[1] = new int[4];
• Items[2] = new int[2];
• D) int[][] items;
• Items[0] = new int[1];
• Items[1] = new int[4];
• Items[2] = new int[2];

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Definitions:

Pooled Standard Error

A method to estimate the standard error across two or more samples by combining the individual standard deviations into a single measure, often used in t-tests.

Confidence Interval

A variety of values obtained from sample data that probably encompasses the value of an unspecified population characteristic.

Margin of Error

An expression of the amount of random sampling error in a survey’s results.

Test Statistic

A calculated value used in statistical testing to determine if the null hypothesis can be rejected.