Write a program that computes the average and standard deviation of four scores.

Question

Write a program that computes the average and standard deviation of four scores. The standard deviation is defined as: st_ dev = where a is the average of the four scores, s1, s2,s3, s4. You should have a main ( ) and two functions, both of which are called by main (). The first function should be a call-by-value function that returns the average back to main (). The second function will have 6 parameters and should make use of call-by-reference to pass appropriate value(s) back to main ( ). This second function will also be of type void. Do not forget to create prototypes and appropriate function calls. All parameter names must be unique.

Explanation / Answer

please rate - thanks #include #include using namespace std; double mean(double,double,double,double); void standardd(double,double,double,double,double,double&); int main() {double x1,x2,x3,x4,average,sd; coutx1; coutx2; coutx3; coutx4; average=mean(x1,x2,x3,x4); standardd(x1,x2,x3,x4,average,sd); cout

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