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Hatshy [7]
3 years ago
10

A student who used a regression model that included indicator variables was upset when receiving only the following output on th

e multiple regression printout: X TRANSPOSE X SINGULAR. What is a likely source of the difficulty
Computers and Technology
1 answer:
jeka57 [31]3 years ago
4 0

Answer:

This is a multicolinearity problem and the student should determine the variable(s) that cause(s) the problem and remove it.

Explanation:

This information means that there exists a linear combination between the independent variables. The problem might have developed due to multicolinearity producing almost perfectly linearly dependent columns.

This could also be as a results of single matrix created when the student use an incorrect indicator variables and included an additional indicator column which created linearly dependent columns.

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vfiekz [6]

I believe the answer is D, document object model. Conditional Statements deal with if statements, iterative structures are while and for loops, HTML tags are the tags which help to format and define a webpage, and src attribute deal with specifying external sources for certain tags.

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3 years ago
Which of the following statements are true about mobile app development? Select 3 options.
mestny [16]

Answer:

Option 1,4 and 5 are correct.

7 0
2 years ago
Read 2 more answers
A light rag is striking the surface of earth. Which factor would make the light ray more likely to be absorbed than reflected?
Sergeu [11.5K]

Answer:

The answer is D.

Explanation:

because the other answers doesn't make sense.

6 0
3 years ago
(20 points) Given a collection of n nuts and a collection of n bolts, arranged in an increasing order of size, give an O(n) time
Blababa [14]

Answer:

Check the explanation

Explanation:

Keep two iterators, i (for nuts array) and j (for bolts array).

while(i < n and j < n) {

if nuts[i] == bolts[j] {

We have a case where sizes match, output/return

}

else if nuts[i] < bolts[j] {

what this means is that the size of nut is lesser than that of bolt and we should go to the next bigger nut, i.e., i+=1

}

else {

what this means is that the size of bolt is lesser than that of nut and we should go to the next bigger bolt, i.e., j+=1

}

}

Since we go to each index in both the array only once, the algorithm take O(n) time.

6 0
3 years ago
*When a computer programmer is finished writing or developing a program, what has to happen first before the computer can unders
Alenkinab [10]

Answer:

C. The source code has to be translated into object code.

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