\(\begin{array}{c|c} Class Interval & 3 - 5 & 6 - 8 & 9 - 11

MATHEMATICS
JAMB 2011

\(\begin{array}{c|c}

Class Interval & 3 - 5 & 6 - 8 & 9 - 11 \\ \hline Frequency & 2 & 2 & 2 \end{array}\). Find the standard deviation of the above distribution

  • A. √5
  • B. √6
  • C. √7
  • D. √2

Correct Answer: B. √6



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