Answer:
Systolic on right
![\hat{CV} =\frac{18.68}{127.5}=0.147](https://tex.z-dn.net/?f=%20%5Chat%7BCV%7D%20%3D%5Cfrac%7B18.68%7D%7B127.5%7D%3D0.147)
Systolic on left
![\hat{CV} =\frac{12.65}{74.2}=0.170](https://tex.z-dn.net/?f=%20%5Chat%7BCV%7D%20%3D%5Cfrac%7B12.65%7D%7B74.2%7D%3D0.170)
So for this case we have more variation for the data of systolic on left compared to the data systolic on right but the difference is not big since 0.170-0.147 = 0.023.
Step-by-step explanation:
Assuming the following data:
Systolic (#'s on right) Diastolic (#'s on left)
117; 80
126; 77
158; 76
96; 51
157; 90
122; 89
116; 60
134; 64
127; 72
122; 83
The coefficient of variation is defined as " a statistical measure of the dispersion of data points in a data series around the mean" and is defined as:
![CV= \frac{\sigma}{\mu}](https://tex.z-dn.net/?f=%20CV%3D%20%5Cfrac%7B%5Csigma%7D%7B%5Cmu%7D)
And the best estimator is ![\hat {CV} =\frac{s}{\bar x}](https://tex.z-dn.net/?f=%5Chat%20%7BCV%7D%20%3D%5Cfrac%7Bs%7D%7B%5Cbar%20x%7D)
Systolic on right
We can calculate the mean and deviation with the following formulas:
[te]\bar x = \frac{\sum_{i=1}^n X_i}{n}[/tex]
![s= \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}](https://tex.z-dn.net/?f=%20s%3D%20%5Cfrac%7B%5Csum_%7Bi%3D1%7D%5En%20%28x_i%20-%5Cbar%20X%29%5E2%7D%7Bn-1%7D)
For this case we have the following values:
![\bar x = 127.5, s= 18.68](https://tex.z-dn.net/?f=%20%5Cbar%20x%20%3D%20127.5%2C%20s%3D%2018.68)
So then the coeffcient of variation is given by:
![\hat{CV} =\frac{18.68}{127.5}=0.147](https://tex.z-dn.net/?f=%20%5Chat%7BCV%7D%20%3D%5Cfrac%7B18.68%7D%7B127.5%7D%3D0.147)
Systolic on left
For this case we have the following values:
![\bar x = 74.2 s= 12.65](https://tex.z-dn.net/?f=%20%5Cbar%20x%20%3D%2074.2%20s%3D%2012.65)
So then the coeffcient of variation is given by:
![\hat{CV} =\frac{12.65}{74.2}=0.170](https://tex.z-dn.net/?f=%20%5Chat%7BCV%7D%20%3D%5Cfrac%7B12.65%7D%7B74.2%7D%3D0.170)
So for this case we have more variation for the data of systolic on left compared to the data systolic on right but the difference is not big since 0.170-0.147 = 0.023.
<u>Answer:</u>
Option D
<u>Step-by-step explanation:</u>
In this table, the constant of proportionality, which is just the number that each <em>x</em> value is multiplied by to get the corresponding <em>y</em> value, is 7. This is because, as shown by the first row of the table, 1*7=7, and, as shown by the third row of the table, 3*7=21. Therefore, in the second row of the table, <em>y</em> should be 14, as 2*7=14, while in the fourth row of the table, <em>y</em> should be 28, as 4*7=28.
<em>Hope this helps! Comment any questions. </em>
9514 1404 393
Answer:
0.4, 0.004, 0.004
Step-by-step explanation:
The "what" in each case is found by dividing the target value by 10. That is accomplished by moving the decimal point one place to the left.
4/10 = 0.4 ⇒ 10 times 0.4 = 4
0.04 and .04 are exactly the same value, so the last two on your list are the same:
0.04/10 = 0.004 ⇒ 10 times .004 = 0.04
Answer:
take square root of both sides. √x^2 = x √36= 6
Step-by-step explanation:
x=6
Answer:
Usually people don't give step by step explanations but you could explain how you solved it for example
x=5
Step-by-step explanation:
and then show how you solved the equation "2x=10"