Answer: E. none of the above
Step-by-step explanation:
The given data values that represents the population:
2, 6, 3, and 1.
Number of values : n=4
Mean of the data values = ![\dfrac{\text{Sum of values}}{\text{No. of values}}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctext%7BSum%20of%20values%7D%7D%7B%5Ctext%7BNo.%20of%20values%7D%7D)
![\dfrac{2+6+3+1}{4}=\dfrac{12}{4}=3](https://tex.z-dn.net/?f=%5Cdfrac%7B2%2B6%2B3%2B1%7D%7B4%7D%3D%5Cdfrac%7B12%7D%7B4%7D%3D3)
Sum of the squares of the difference between each values and the mean =
![(2-3)^2+(6-3)^2+(3-3)^2+(1-3)^2](https://tex.z-dn.net/?f=%282-3%29%5E2%2B%286-3%29%5E2%2B%283-3%29%5E2%2B%281-3%29%5E2)
![=-1^2+3^2+0^2+(-2)^2](https://tex.z-dn.net/?f=%3D-1%5E2%2B3%5E2%2B0%5E2%2B%28-2%29%5E2)
![=1+9+0+4=14](https://tex.z-dn.net/?f=%3D1%2B9%2B0%2B4%3D14)
Now , Variance = (Sum of the squares of the difference between each values and the mean ) ÷ (n)
= (14) ÷ (4)= 3.5
Hence, the variance is 3.5.
Therefore , the correct answer is "E. none of the above".
The answer to the selected problem is your third choice
Answer:
The x- and y-coordinates have the same sign. Quadrants I and III; Sample answer: In Quadrant I, both coordinates are positive and in Quadrant III, both coordinates are negative. 16. The x- and y-coordinates have opposite signs.
Step-by-step explanation:
They both have on both sides is three angles and an origial point.
Answer:
a = 1 b = -1.
Step-by-step explanation:
Suppose the quotient when you divide x^4+x^3+ax+b by x^2 + 1 is
x^2 + ax + b then expanding we have:
(x^2 + 1)(x^2 + ax + b)
= x^4 + ax^3 + bx^2 + x^2 + ax + b
= x^4 + ax^3 + (b + 1)x^2 + ax + b Comparing this with the original expression:
x^4 + x^3 + 0 x^2 + ax + b Comparing coefficients:
a = 1 and b+ 1 = 0 so b = -1.