Question

В классе самостоятельную по математике 8 учеников написали на пять,12 учеников-на четыре,4 ученик-на три и 1 ученик на два.Вычисли средний балл класса за эту самостоятельную работу?

Answer 1

Среднее арифметическое (8*5+12*4+4*3+1*2):25=(40+48+12+2):25=4.08

Answer 2

Calculating the Average Score for the Math Assignment

To calculate the average score for the math assignment, we can use the following formula:

Average score = (Total score) / (Total number of students)

Let's calculate the average score step by step.

1. Total Score Calculation: - 8 students scored 5 - 12 students scored 4 - 4 students scored 3 - 1 student scored 2

To find the total score, we can calculate: \[ (8 \times 5) + (12 \times 4) + (4 \times 3) + (1 \times 2) \]

This gives us: \[ (40) + (48) + (12) + (2) = 102 \]

So, the total score for the class is 102.

2. Total Number of Students: - 8 + 12 + 4 + 1 = 25

There are a total of 25 students in the class.

3. Average Score Calculation: - Using the formula: \[ \text{Average score} = \frac{\text{Total score}}{\text{Total number of students}} \] - Substituting the values: \[ \text{Average score} = \frac{102}{25} \] - Calculating: \[ \text{Average score} = 4.08 \]

Conclusion

The average score for the math assignment in the class is 4.08.