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Elementary Statistics: Picturing the World | 6th Edition | ISBN: 9780321911216 | Authors: Ron Larson; Betsy Farber
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Finding the Weighted Mean In Exercise, find

Chapter 2, Problem 45E

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QUESTION:

Problem 45E

Finding the Weighted Mean In Exercise, find the weighted mean of the data.

Grades A student receives the grades shown below, with an A worth 4 points, a B worth 3 points, a C worth 2 points, and a D worth 1 point. What is the student’s mean grade point score?

A in 1 four-credit class

B in 2 three-credit classes

C in 1 three-credit class

D in 1 two-credit class

Questions & Answers

QUESTION:

Problem 45E

Finding the Weighted Mean In Exercise, find the weighted mean of the data.

Grades A student receives the grades shown below, with an A worth 4 points, a B worth 3 points, a C worth 2 points, and a D worth 1 point. What is the student’s mean grade point score?

A in 1 four-credit class

B in 2 three-credit classes

C in 1 three-credit class

D in 1 two-credit class

ANSWER:

Answer

Step 1 of 1

(a)

We are asked to find the weighted mean of the data.

A student receives the grades shown below, with an A worth 4 points, a B worth 3 points, a C worth 2 points, and a D worth 1 point.

We are asked to find the student’s mean grade point score.

A in 1 four-credit class

B in 2 three-credit classes

C in 1 three-credit class

D in 1 two-credit class

A weighted mean is the mean of a data set whose entries have varying weights.

The weighted mean is given by

where  is the weight of each entry .

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