1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
oksian1 [2.3K]
3 years ago
5

Which of these statements is best? The errors in a regression model are assumed to have an increasing mean. The regression model

assumes the error terms are dependent. The errors in a regression model are assumed to have zero variance. The regression model assumes the errors are normally distributed.
Mathematics
1 answer:
frutty [35]3 years ago
8 0

Answer:

\epsilon = Y -X\beta

And the expected value for E(\epsilon) = 0 a vector of zeros and the covariance matrix is given by:

Cov (\epsilon) = \sigma^2 I

So we can see that the error terms not have a variance of 0. We can't assume that the errors are assumed to have an increasing mean, and we other property is that the errors are assumed independent and following a normal distribution so then the best option for this case would be:

The regression model assumes the errors are normally distributed.

Step-by-step explanation:

Assuming that we have n observations from a dependent variable Y , given by Y_1, Y_2,....,Y_n

And for each observation of Y we have an independent variable X, given by X_1, X_2,...,X_n

We can write a linear model on this way:

Y = X \beta +\epsilon

Where \epsilon_{nx1} i a matrix for the error random variables, and for this case we can find the error ter like this:

\epsilon = Y -X\beta

And the expected value for E(\epsilon) = 0 a vector of zeros and the covariance matrix is given by:

Cov (\epsilon) = \sigma^2 I

So we can see that the error terms not have a variance of 0. We can't assume that the errors are assumed to have an increasing mean, and we other property is that the errors are assumed independent and following a normal distribution so then the best option for this case would be:

The regression model assumes the errors are normally distributed.

You might be interested in
Write the ratio two fifths<br> to 8 as a fraction in simplest form.<br><br> PLEASE HELP
charle [14.2K]

Answer:

the answer is b on oddesseyware

Step-by-step explanation:

7 0
3 years ago
The Gallup Poll uses a procedure called random digit dialing, which creates phone numbers based on a list of all area codes in A
kondaur [170]
Random digit dialing<span> (RDD) is a method for selecting people for involvement in telephone statistical surveys by generating telephone numbers at </span>random<span>. </span>Random digit dialing<span> has the advantage that it includes unlisted numbers that would be missed if the numbers were selected from a phone book.</span>
5 0
3 years ago
Read 2 more answers
What is the solution to -2(8x - 4) &lt; 2x + 5?
kumpel [21]

Answer:

x = - 10

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The distance between the points (-3,0) and (4,0) is
hram777 [196]

Answer:

\sqrt{7}

Step-by-step explanation:

\sqrt{(4 -  ( - 3) + (0 - 0)}

\sqrt{(4 + 3) + 0}

\sqrt{7 + 0}

\sqrt{7}

5 0
2 years ago
Read 2 more answers
Is the work shown below correct? Explain your
tatyana61 [14]

(11+21)-(3-101)=(11+21-3-10=(11-3)+(21-101=8-18=53

3 0
3 years ago
Other questions:
  • Louisa is 152.7 centimeters tall. Her younger sister is 8.42 centimeters shorter than she is. How tall is Louisa’s younger siste
    10·2 answers
  • Please answer this will reward brainlest
    5·1 answer
  • Which measure correctly completes the statement?
    12·1 answer
  • What is the measurement of &lt;1?
    13·2 answers
  • K (n) = 4n – 4; Find k (8)<br> 28<br> 4<br> -32<br> -24<br> The answer
    13·1 answer
  • Need help with this math problem
    14·1 answer
  • Write down the number that is equal to the fifth power of 10
    7·2 answers
  • The lines shown below are parallel. If the green line has a slope of 8, what is
    10·1 answer
  • 0.7km in miles<br> Please answer
    12·1 answer
  • SOLVE THIS TO PROVE YOUR GOOD AT MATHS! (click the image attached)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!