Question

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 23% of your total grade, each major test is worth 22.5%, and the final exam is worth 32%. Compute the weighted average for the following scores: 85 on the lab, 95 on the first major test, 91 on the second major test, and 76 on the final exam. (Enter your answer to one decimal place.)

Answer 1

The weighted average for the following score is
`W = 85.72`

Explanation:

From the question we are told that

The worth of the lab score is 23% of total grade i.e 0.23

The worth of each major test is 22.5% of the total grade 0.225

The worth of the final exam is 32% of the total grade 0.32

The score on lab is 85

The score on first major test is 95

The score on the second major test is 91

The score on the final exam is 76

Generally the weighted average is mathematically represented as

`W  =  [0.23 *  85 ]+ [0.225 * 95] +  [0.225 * 91 ]+ [0.32 *76  ]`

=>
`W = 85.72`