Rachel is curious about the number of pets that people own. She surveyed her 20 classmates, asking them exactly how many pets they own. Rachel's data is shown below:

Number of Pets 0 Pets 1 Pet 2 Pets 3 Pets
Number of Classmates 9 6 1 4

What is the mean number of pets owned by Rachel's classmates?

9 * 0 = 0

6 * 1 = 6
2 * 1 = 4
3 * 4 = 12

Total number of pets = 22

Total number of classmates = 20

22/20 = 1.1 mean number of pets

To find the mean number of pets owned by Rachel's classmates, follow these steps:

1. Multiply each value in the "Number of Pets" column by the corresponding value in the "Number of Classmates" column.

0 Pets * 9 classmates = 0
1 Pet * 6 classmates = 6
2 Pets * 1 classmate = 2
3 Pets * 4 classmates = 12

2. Add up all the products from the previous step.

0 + 6 + 2 + 12 = 20

3. Add up the total number of classmates.

9 + 6 + 1 + 4 = 20

4. Divide the total from step 2 by the total from step 3.

20 / 20 = 1

Therefore, the mean number of pets owned by Rachel's classmates is 1.

To find the mean number of pets owned by Rachel's classmates, we need to calculate the sum of the number of pets and divide it by the total number of classmates surveyed.

To do this, we can multiply the number of pets by the corresponding number of classmates and then sum up these products. Let's calculate it step by step.

Number of Pets: | 0 | 1 | 2 | 3 |
Number of Classmates: | 9 | 6 | 1 | 4 |
----------------------
Product: | 0 | 6 | 2 | 12 |

Now, let's calculate the sum of these products:

Sum of Products = 0 + 6 + 2 + 12 = 20

Finally, we need to divide the sum of the products by the total number of classmates (20) to find the mean:

Mean = Sum of Products / Total Number of Classmates

Mean = 20 / 20

Mean = 1

Therefore, the mean number of pets owned by Rachel's classmates is 1.