Danielle has the following test scores in math: 77, 82, 91, and 99. On her fifth test, she scored an 82. Which of the following is true about Danielle's test scores after scoring an 82 on her last test?
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Given : Danielle test scores in math: 77, 82, 91, and 99. . On her fifth test, she scored an 82.
To find : Impact on her average test score
Solution:
Danielle Score in 4 test
77 , 82 , 91 & 99
Total Score = 77 + 82 + 91 + 99 = 349
Average Score in 4 Test = 349/4 = 87.25
On her fifth test, she scored an 82
as her Score is less than average score hence her average will be reduced
Total Score ion 5 tests = 349 + 82 = 431
Total Tests = 5
Average Score = 431/5
= 86.2
Reduction in average score = 87.25 -86.2 = 1.05
Danielle's average score reduced by 1.05
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