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Sati [7]
3 years ago
13

In a multiple regression analysis what would likely be the culprit of a dramatic increase in the P-value of one of the variables

?
Mathematics
1 answer:
makvit [3.9K]3 years ago
6 0
This can happen if you add another independent variable to your regression model that is strongly correlated to some other variable already in the model.
This is called multicollinearity. 
If there is a high correlation between your independent variables can lead to problems.
<span>It can lead to increased variance of the coefficient estimates and make the estimates very sensitive to minor changes in the model.</span>
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Daniel is printing out copies of a presentation. It takes 3 minutes to print a color copy and 1 minute to print a black-and-whit
Effectus [21]
Work the information to set inequalities that represent each condition or restriction.

2) Name the variables. 

c: number of color copies
b: number of black-and-white copies

3) Model each restriction:

i) <span>It takes 3 minutes to print a color copy and 1 minute to print a black-and-white copy.
</span><span>
</span><span>3c + b
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</span><span>
</span><span>ii) He needs to print at least 6 copies ⇒ c + b ≥ 6
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</span><span>
</span><span>iv) And must have the copies completed in no more than 12 minutes ⇒</span>

3c + b ≤ 12
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4) Additional restrictions are c ≥ 0, and b ≥ 0 (i.e. only positive values for the number of each kind of copies are acceptable)

5) This is how you graph that:

i) 3c + b ≤ 12: draw the line 3c + b = 12 and shade the region up and to the right of the line.

ii) c + b ≥ 6: draw the line c + b = 6 and shade the region down and to the left of the line.

iii) since c ≥ 0 and b ≥ 0, the region is in the first quadrant.

iv) The final region is the intersection of the above mentioned shaded regions.

v) You can see such graph in the attached figure.

6 0
3 years ago
What is the answer for 25.2÷2.1 using showing my work
lilavasa [31]

Answer:

25.2

Step-by-step explanation:

2.1*12=25.2

use a calculator if you're allowed to show work that way, if not a simple way is

2.1*10=21

2.1*11=23.1

2.1*12 is equal to 2.1*10=21 because 2*12=24 and .1*12=1.2

7 0
3 years ago
All tests for the first six chapters of a textbook had 20–30 questions. The chapter 7 test will be given tomorrow. What reasonab
ankoles [38]

The chapter 7 test will have 20-30 questions on it. Novanet!

5 0
3 years ago
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Maru [420]

Answer:

Step-by-step explanation:

8 0
3 years ago
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Sonji bought a combination lock that opens with a four-digit number created using the digits 0 through 9. The same digit cannot
Alex777 [14]

Answer:

504 combos

Step-by-step explanation:

Cannot use digits twice and last is '7'

 9 digits for first place choice  

     8 digits for second place

         7 digits for third place

               only  '7' for fourth place       9 x 8 x7 = 504 combos

8 0
2 years ago
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