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2 years ago

Plz help with this it’s hard you need to find the points The formula is y=Mx+b

Mathematics

1 answer:

jok3333 [9.3K]2 years ago

4 0

Answer:

hindi ko yarrnn alam....sorry ahhh

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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

Matthew has $540 in his bank account. He subscribes to a music streaming service for $7.99 per month. If he makes no other depos

vitfil [10]

7.99 x 5 = 39.95 (40 dollars) 540-39.95 =500.05

5 0

2 years ago

Read 2 more answers

24x10=?? (Please explain in zero the hero or in 4 square..)

Tamiku [17]

240, you just add a zero to 24, I don't know what you mean by zero the hero of 4 square, hope this helps!

6 0

3 years ago

Read 2 more answers

Henry gross pay is $4000 a month. If he saves $500 of his pay, what percent of his pay does he save?

Makovka662 [10]

Answer:

12.5%

Step-by-step explanation:

big brain

7 0

2 years ago

What is 3/4 of 4/5. Plz help

Dmitriy789 [7]

Answer:

3/5

Step-by-step explanation:

We want to find 3/4 of 4/5.

The keyword of tells us that we need to multiply. Therefore:

$\frac{3}{4}\times\frac{4}{5}$

Multiply:

$=12/20=3/5$

So, 3/4 of 4/5 is 3/5.

We can confirm this by converting them to decimals.

4/5 is 0.8.

3/4 is 0.75.

0.75 or 75% of 0.8 is indeed 3/5 or 0.6.

6 0

2 years ago