The mean of the following numbers 2.3,

2.1, 0.75, 0.25, 2.8, 0.9, 15, and 15 is____

To find the mean of a set of numbers, you add up all the numbers and then divide by the total number of numbers.

Adding up the numbers: 2.3 + 2.1 + 0.75 + 0.25 + 2.8 + 0.9 + 15 + 15 = 39.1

Counting the total number of numbers: 8

Dividing the sum of the numbers by the total number of numbers: 39.1 / 8 = 4.8875

So, the mean of the given numbers is 4.8875.

To find the mean of a set of numbers, you need to add up all the numbers and then divide the sum by the total count.

Let's calculate the mean step by step:

Step 1: Add up all the numbers:
2.3 + 2.1 + 0.75 + 0.25 + 2.8 + 0.9 + 15 + 15 = 39.15

Step 2: Determine the total count of numbers in the set:
There are 8 numbers in the set.

Step 3: Divide the sum by the total count:
Mean = 39.15 / 8

Step 4: Calculate the mean:
Mean = 4.89375

Therefore, the mean of the given numbers 2.3, 2.1, 0.75, 0.25, 2.8, 0.9, 15, and 15 is approximately 4.89375.