Standard deviation is: It is a measure of how spread out numbers are. It is the square root of the Variance, and the Variance is the average of the squared differences from the Mean.
For example: To find the standard deviation, you have to add up all the numbers in the data set, then divide by how many numbers there are, and that will get you your answer.
Example, Say your data set is: 9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4.
The Mean is: 9 + 2 + 5 + 4 + 12 + 7 + 8 + 11 + 9 + 3 + 7 + 4 + 12 + 5 + 4 + 10+ 9 + 6 + 9 + 4. Over 20. That equals: 104 over 20 = 7.
So, the Standard Variance and Mean is: 7 for this problem.
Hope I helped!
- Debbie
Answer:
The answer is a.
Step-by-step explanation:
Answer:
The advantage to the lender would be that he’s getting money & if the person doesn’t pay the rest of the price they at least got some money , and the advantage for the borrower is that they can pay the rest later.
Step-by-step explanation:
Answer:
your number is 18
Step-by-step explanation:
x^2 = (x × 10 ) + 144
x^2 = 10x + 144
x^2 - 10x - 144 = 0
using quadratic method
your answer should be
(x- 18) ( x+8 )
Answer:
D) -9 + 9
Step-by-step explanation:
The Additive Inverse Property is where the sum of any number and its inverse (opposite) is zero. In this case, we need to have an expression that equals zero, and two numbers that are opposite of each other. This would be D) -9 + 9 because these two numbers are inverses of each other, and the expression equals 0.
