You cannot.
22.4
If there is no mean it is very rare that you will be able to find a missing number. Potentially if you have other numbers and you have a mode you can deduce the missing number by using the mode (if there needs to be one more of a certain number or a certain number cannot be increased in its count of numbers i.e. you can't have more 6's to maintain the current mode).
geometric means like find the missing number and algebraic means negatives and positves
You cannot. You can only work with the remaining observations. Estimating the missing value will not add to the information. You will only APPEAR to have an additional piece of information.
Convert it.
you have to count up all of the addends
You cannot.
Add all the numbers and divide it by however many numbers you added, then that's how you get the missing number to help you complete the mean.
The mean times three will be the total of all three numbers. Multiply the mean times three and subtract the sum of the two numbers from that total.
22.4
If there is no mean it is very rare that you will be able to find a missing number. Potentially if you have other numbers and you have a mode you can deduce the missing number by using the mode (if there needs to be one more of a certain number or a certain number cannot be increased in its count of numbers i.e. you can't have more 6's to maintain the current mode).
a number
geometric means like find the missing number and algebraic means negatives and positves
a missing number
You cannot. You can only work with the remaining observations. Estimating the missing value will not add to the information. You will only APPEAR to have an additional piece of information.
If you mean: 60, 48 .... 24 then the missing number is 36