Doug had scores of 80, 85, 75, and 80 on his first four exams in a course. a. Find the mean, median, and mode for these exam scores. b. Which “average” would Doug want the teacher to use in determining his grade? c. What score would Doug have to get on a fifth examination to raise his mean score to 84? Is it reasonable to expect Doug to achieve that score?
5 answers
We'll be glad to check your answers.
A. The mean 80+85+75+80=320
320/4=80
Median is 80: 75, 80, 80 ,85
0,0,5,7,8,8,8 mode is 8
B. 80
C. 84 x 5= 420-320=100. Doug would have to make a 100% to have an average of 84. No it isn’t reasonable for
Doug to score 100.
320/4=80
Median is 80: 75, 80, 80 ,85
0,0,5,7,8,8,8 mode is 8
B. 80
C. 84 x 5= 420-320=100. Doug would have to make a 100% to have an average of 84. No it isn’t reasonable for
Doug to score 100.
Your median and mean are correct. The mode is also 80.
Your other answers are correct.
Your other answers are correct.
Sweet! Thanks
You're welcome.