Which of the Following Is the Formula for the Estimated $\frac { \sum ( X - \bar { X } ) } { N }$

question 20

Multiple Choice

Which of the following is the formula for the estimated population variance?

• A) \(\frac { \sum ( X - \bar { X } ) } { N }\)
• B) \(\frac { \sum ( X - \bar { X } ) ^ { 2 } } { N }\)
• C) \(\frac { \sum ( X - \bar { X } ) } { N - 1 }\)
• D) \(\frac { \sum ( X - \bar { X } ) ^ { 2 } } { N - 1 }\)

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