How do you find the average deviation from these numbers:

290 , 270 , 250 , 300 , & 290.

I think their mean is 280

average deviation would be the average of the deviations from the mean.

If the mean is 280, then the deviations are

10 -10 -30 20 10

figure the average of those numbers.

how did u get those numbers?

The deviation is the difference between a value and the mean.

So the deviations are:

(290-280) (270-280) (250-280) (300-280) (290-280)

This gives you: 10 -10 -30 20 10

The average is the sum of the numbers divided by the number of numbers (5).

so that would be 0/5 = 0.

To find the average deviation from a set of numbers, you need to follow these steps:

1. Find the mean: Add up all the numbers and divide the sum by the total number of values. In this case, the sum of the numbers is 290 + 270 + 250 + 300 + 290 = 1400, and there are 5 values. So, the mean is 1400 ÷ 5 = 280.

2. Calculate the deviation for each number: Subtract the mean from each individual number. For example, the deviation for the first number (290) would be 290 - 280 = 10.

3. Take the absolute value of each deviation: Since we want to find the average deviation, we need to consider the magnitude of the deviations. So, remove any negative signs by taking the absolute value of each deviation.

4. Average the deviations: Add up all the absolute deviations and divide the sum by the total number of values. In this case, the absolute deviations are 10, 10, 30, 20, and 10. The sum is 80, and there are 5 values. Therefore, the average deviation is 80 ÷ 5 = 16.

Hence, the average deviation from the numbers 290, 270, 250, 300, and 290 is 16.