https://r2.erweima.ai/mathbot/image/1725668672645lvaldtq1.jpg

Let's solve the problem from the image. The question is asking for the median of the following set of grades:

**7, 7, 6, 8, 9, 7, 8, 9, 10, 10, 7, 8, 9, 10, 6, 6, 7, 9, 10**

### Step 1: Sort the numbers in ascending order:
The sorted list of grades is:

**6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10**

### Step 2: Calculate the median
Since there are 19 numbers (an odd number of elements), the median is the middle value in this ordered list. The middle element is the 10th number.

The 10th number in the sorted list is **8**.

### Conclusion:
The median of the group is **8**, so the correct answer is:

**c. 8**

---

Would you like more details on this calculation? 

Here are some related questions to think about:
1. How is the median affected if there were an even number of grades?
2. What is the mean (average) of these grades?
3. How does the range of this data set compare to its median?
4. What is the mode of this set of grades?
5. What are the quartiles of this data set?

**Tip:** The median gives a central value that is resistant to outliers, unlike the mean, which can be skewed by very high or low values.

Un grupo obtuvo las siguientes calificaciones: 7, 7, 6, 8, 9, 7, 8, 9, 10, 10, 7, 8, 9, 10, 6, 6, 7, 9, 10. Calcula la mediana del grupo.

Learn how to calculate the median of a set of grades. In this problem, a group has the following grades: 7, 7, 6, 8, 9, 7, 8, 9, 10, 10, 7, 8, 9, 10, 6, 6, 7, 9, 10. Find out how to sort the data and find the middle value.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation