The mean quiz score for 8 students is 50 . The scores for 7 of the 8 students are shown below. What is the score for the remai
1 answer:
This question is incomplete
Complete Question
The mean quiz score for 8 students is 50. The scores for 7 of the 8 students are shown below:
20, 20, 20, 30, 80, 80, 80
What is the score for the remaining student?
Answer:
70
Step-by-step explanation:
The mean quiz score for 8 students is 50.
The total score of the students is
Mean × Number of students
Total score of the students = 50 × 8
= 400
From the attached image, and the question above, the scores of the students were given in a dot plot
and interpreted as:
20, 20, 20, 30, 80, 80, 80
Hence, the total scores of the 7 students is
20 + 20 + 20 + 30 + 80 + 80 + 80
= 330
The score of the 8th and remaining student is calculated as:
400 - 330 = 70
You might be interested in
1.a sphere with a radius of three units
By definition, the volume of a sphere is:
Substituting values we have:
Rewriting we have:
2.a cone with a diameter of twelve units and a height of three units
By definition, the volume of a cone is given by:
Substituting values we have:
Rewriting we have:
By definition, the volume of a sphere is:
Substituting values we have:
Rewriting we have:
2.a cone with a diameter of twelve units and a height of three units
By definition, the volume of a cone is given by:
Substituting values we have:
Rewriting we have: