Which of the Following Cannot Be Used to Concatenate Strings

question 1

Multiple Choice

Which of the following cannot be used to concatenate strings?

• A) +
• B) +=
• C) append
• D) assign

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Definitions:

Null Hypothesis

A hypothesis used in statistical testing that assumes no significant difference or effect exists between certain states or variables.

Observed Frequency

The number of times a particular value or category of data occurs in a set of data, used in the analysis of categorical variables.

Expected Frequency

The theoretically calculated frequency of an event or outcome based on the probabilities in a statistical experiment, often compared to observed frequencies in chi-squared tests.

Test Statistic

A statistic calculated from sample data, used to determine whether to reject the null hypothesis.