The correct answer is:

Two arrays of numeric data.

Explanation:

The CORREL function in Excel calculates the Pearson correlation coefficient between two datasets. The function requires exactly two arrays (ranges) of numeric data to determine the linear relationship between them.

Syntax of CORREL:

CORREL(array1, array2)

• array1: The first range of numeric data.
• array2: The second range of numeric data.

Key Points:

1. Both arrays must have the same number of values.
2. If either array contains non-numeric data (e.g., text, logical values), they are ignored.
3. Empty cells or mismatched array sizes will result in an error.

Would you like additional details or an example on how to use the CORREL function in Excel?

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Related Questions:

1. What does a CORREL result of 1, -1, or 0 indicate?
2. How does CORREL differ from the PEARSON function in Excel?
3. Can CORREL handle missing or blank data in the arrays?
4. What happens if the arrays for CORREL are not of equal length?
5. How can you interpret the correlation coefficient in real-world scenarios?

Tip:

Always ensure your datasets are cleaned and formatted correctly before using the CORREL function to avoid unexpected errors or misleading results.