Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90. Overall, what was the approximate mean score for all of the students on the quiz?Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90. Overall, what was the approximate mean score for all of the students on the quiz?

85.714285714

Step-by-step explanation:

Section A

15 students has a mean score of 80

The Total score of the 15 students =

15 × 80

= 1200

Section B

20 students had a mean score of 90

Total score of the 20 students =

90 × 20

= 1800

Total number of students = 15 + 20

= 35 students

Total scores of the 35 students (Section + Section B) = 1200 + 1800

= 3000

Hence, overall, the approximate mean score for all of the students on the quiz is calculated as

Total score of the students ins section A and B/ Total number of students

= 3000/35

= 85.714285714

Therefore, the approximate mean score for all of the students on the quiz is 85.714285714

answer: b)

step-by-step explanation:

its a dot plot because since the score is not high numbers.

- r3ktforgood ☕

if x = 1, then the answer is 3.5