For a symmetrical distribution approximately 68% of the cases are inc – McqOptions

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1.	For a symmetrical distribution approximately 68% of the cases are included between _________________?
A.	X¯¯¯¯−S and X¯¯¯¯+S
B.	X¯¯¯¯−2S and X¯¯¯¯+2S
C.	X¯¯¯¯−3S and X¯¯¯¯+3S
D.	None of these
Answer» B. X¯¯¯¯−2S and X¯¯¯¯+2S

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