Answer:
mean = ( 33+44+43+56+55+30) / 6
= 261/6
= 43.5
[tex]variance = \frac{33 { }^{2} + {44}^{2} + {43}^{2} + {56}^{2} + {55}^{2} + {30}^{2} }{6} - {43.5}^{2} [/tex]
variance = 96.92
standard deviation = √96.92
= 9.84
difference between mean and standard deviation
= 43.5 - 9.84
= 33.66
