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A math method of studying variable rates of change, find areas bounded by curves, volumes created by rotation of a curve.
Presumably no curves at all.
If the question can be answered then the curves are no longer undefined!
The Curse of Curves was created in 2006.
Chi-square density curves are right-skewed. Each Chi-square random variable is associated with a degree of freedom (υ), .As υ increase, Chi-square curves become more symmetric.Z2, the square of a normal[0,1] random variable, follows adistribution.The sum of 2 independent Chi-square random variables withυ1, υ2degrees of freedom respectively, has a Chi-square distribution withυ = υ1+ υ2degrees of freedom.E() = υand V() = 2 υ.If {X1, X2, …, Xn} is a random sample of size n drawn from normal population with mean μ and standard deviation σ (i.e., X ~ normal[μ,σ]), then {(n-1)S2 }/ σ2 =~.