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2 years ago

Please help!! What is the equation of this line in slope-intercept form? (see picture)

Mathematics

1 answer:

faust18 [17]2 years ago

5 0

Answer:

you answer is B

Step-by-step explanation:

I am almost 100% sure it is B but correct me if im wrong

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What is the equation of the best-fitting regression line? Find this in two ways. First, using the regression analysis part of th

Lemur [1.5K]

Step-by-step explanation:

Regression analysis is used to infer about the relationship between two or more variables.

The line of best fit is a straight line representing the regression equation on a scatter plot. The may pass through either some point or all points or none of the points.

Method 1:

Using regression analysis the line of best fit is: $y=\alpha +\beta x+e$

Here α = intercept, β = slope and e = error.

The formula to compute the intercept is:

$\alpha =\bar y-\beta \bar x$

Here $\bar y$ and $\bar x$ are mean of the y and x values respectively.

$\bar y=\frac{\sum y_{i}}{n} \\\bar x=\frac{\sum x_{i}}{n}$

The formula to compute the slope is:

$\beta =\frac{\sum (x-\bar x)(y - \bar y)}{\sum (x=\bar x)^{2}}$

And the formula to compute the error is:

$e=y-\alpha -\beta x$

Method 2:

The regression line can be determined using the descriptive statistics mean, standard deviation and correlation.

The equation of the line of best fit is:

$(y-\bar y)=r\frac{\sigma_{x}}{\sigma_{y}} (x-\bar x)$

Here r = correlation coefficient = $r=\frac{Cov (x,y)}{\sqrt{\sigma^{2}_{x}\sigma^{2}_{y}} }$

$\sigma_{x}$ and $\sigma_{y}$ are standard deviation of x and y respectively.

$\sigma_{x}=\frac{1}{n}\sum (x-\bar x)^{2} \\\sigma_{y}=\frac{1}{n}\sum (y-\bar y)^{2}$

3 0

3 years ago

Please help ASAP! What is m∠CAD? a.) 25º b.) 90º c.) 100º d.) 115º

mars1129 [50]

m∠CAD = 90 + 25 = 115
answer
d.) 115º

8 0

2 years ago

Read 2 more answers

Can someone please help its due soon.ill give brainliest!

leva [86]

Answer:

18 and 6

4x= 18+6

4x=24

x=24/4

x=6

4x= 6×4

2x+3

6×2

12+3

3 0

2 years ago

Q 16 Two numbers are in the ratio 3 : 17. If the first is 6, what is the other?

liberstina [14]

Answer:

D 34

Step-by-step explanation:

i hope you understand

3 0

2 years ago

Monthly earnings total $4513. Find the social security tax deducted.

levacccp [35]

The monthly earning is = 4513 dollars.
Find the security tax.
in US, 3% is the security tax.
3% = 3% / 100 = 0.03
NOw, let's solve with this given digits.
=> 4513 * .03 = 135.39
=> 135.39
Therefore the tax deducted to your salary is 135.39 dollars per month.

4 0

3 years ago

Please help!! What is the equation of this line in slope-intercept form? (see picture)​

Please help!! What is the equation of this line in slope-intercept form? (see picture)