Question

At General Hospital, nurses are given performance evaluations to determine eligibility for merit pay raises. The supervisor rates the nurses on a scale of 1 to 10 (10 being the highest rating) for several activities: promptness, record keeping, appearance, and bedside manner with patients. Then an average is determined by giving a weight of 2 for promptness, 3 for record keeping, 1 for appearance, and 4 for bedside manner with patients. What is the average rating for a nurse with ratings of 9 for promptness, 7 for record keeping, 6 for appearance, and 10 for bedside manner?

  

	x	f	x.f
promptness,
record keeping,
appearance,
bedside manner
		∑f=	∑x.f=

Weighted Mean =

Answer 1

Answer:

It is given in the question that the weight of promptness, record keeping, appearance and bedside manner is 2, 3, 1 and 4 respectively.

Substituting the weights in coloumn 'f' and ratings in column 'x' given in the question, we can find the Weighted Mean by the equation. ∑f indicates the sum of all the ratings (x) and ∑x.f indicates the sum of x.f (ratings x weights).

Weighted Mean = ∑x.f / ∑f