Answer:
<u>direction</u>
<u>shape</u>
<u>scatter plots</u>
<u>shape and outliers</u>
Step-by-step explanation:
Correlation is defined as the degree of correspondence between two variables.
When the values increase together, correlation is positive and when one value decreases as the other increases, correlation is negative .
Calculating a correlation can help describe a relation between two quantitative variables' <u>direction</u> and <u>shape</u>. However, it is not sufficient to use a correlation coefficient to describe two variables. The addition of <u>scatter plots</u> can provide other helpful details such as <u>shape and outliers</u>
Answer:
x=2
Step-by-step explanation:
First, subtract 2 on both sides
7x+2=16
7x=14
Divide by 7 on both sides
x=2
Hope this helps! :)
Answer:36
Step-by-step explanation:
A= a+b/2(h)
If ground floor is the same as 1st floor, then the answer is 13 floors.
If ground floor is an additional floor to 1st floor, then the answer is 14 floors.
Answer:
n=11 or n=-3
Step-by-step explanation:
Consider the quadratic equation ![n^2-8n-27=6.](https://tex.z-dn.net/?f=n%5E2-8n-27%3D6.)
First, remind the formula
![(a-b)^2=a^2-2ab+b^2](https://tex.z-dn.net/?f=%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2)
To complete the square, note that
![8n=2\cdot n\cdot 4](https://tex.z-dn.net/?f=8n%3D2%5Ccdot%20n%5Ccdot%204)
Hence, we need ![+4^2](https://tex.z-dn.net/?f=%2B4%5E2)
Add 16 to both sides of equation:
![n^2-8n+16-27=6+16\\ \\(n-4)^2-27=22\\ \\(n-4)^2=49\\ \\n-4=7\text{ or }n-4=-7\\ \\n=11\text{ or }n=-3](https://tex.z-dn.net/?f=n%5E2-8n%2B16-27%3D6%2B16%5C%5C%20%5C%5C%28n-4%29%5E2-27%3D22%5C%5C%20%5C%5C%28n-4%29%5E2%3D49%5C%5C%20%5C%5Cn-4%3D7%5Ctext%7B%20or%20%7Dn-4%3D-7%5C%5C%20%5C%5Cn%3D11%5Ctext%7B%20or%20%7Dn%3D-3)