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
lisabon 2012 [21]
3 years ago
15

If two linear regression models have the same number of explanatory variables, a model with an R2 value of 0.45 is a better pred

iction model than a model with an R2 value of 0.65.
True
False
Mathematics
1 answer:
icang [17]3 years ago
5 0

Answer:

False

Step-by-step explanation:

Given that two linear  regression models have the same number of explanatory variables

First model has coefficient of determination as 0.45 while other

0.65

we know that R^2 is the proportion showing the variation of dependent because of variation in independent variables.

Hence a higher R square is always better because it ensures more linearity and hence more accuracy in the regression equation.

Hence 0.65 model is better than 0.45 model.

The given statement is false.

You might be interested in
Use spherical coordinates. Find the volume of the solid that lies within the sphere x^2 + y^2 + z^2 = 81, above the xy-plane, an
Natasha_Volkova [10]

Answer:

The volume of the solid is 243\sqrt{2} \ \pi

Step-by-step explanation:

From the information given:

BY applying sphere coordinates:

0 ≤ x² + y² + z² ≤ 81

0  ≤ ρ²   ≤   81

0  ≤ ρ   ≤  9

The intersection that takes place in the sphere and the cone is:

x^2 +y^2 ( \sqrt{x^2 +y^2 })^2  = 81

2(x^2 + y^2) =81

x^2 +y^2 = \dfrac{81}{2}

Thus; the region bounded is: 0 ≤ θ ≤ 2π

This implies that:

z = \sqrt{x^2+y^2}

ρcosФ = ρsinФ

tanФ = 1

Ф = π/4

Similarly; in the X-Y plane;

z = 0

ρcosФ = 0

cosФ = 0

Ф = π/2

So here; \dfrac{\pi}{4} \leq \phi \le \dfrac{\pi}{2}

Thus, volume: V  = \iiint_E \ d V = \int \limits^{\pi/2}_{\pi/4}  \int \limits ^{2\pi}_{0} \int \limits^9_0 \rho   ^2 \ sin \phi \ d\rho \   d \theta \  d \phi

V  = \int \limits^{\pi/2}_{\pi/4} \ sin \phi  \ d \phi  \int \limits ^{2\pi}_{0} d \theta \int \limits^9_0 \rho   ^2 d\rho

V = \bigg [-cos \phi  \bigg]^{\pi/2}_{\pi/4}  \bigg [\theta  \bigg]^{2 \pi}_{0} \bigg [\dfrac{\rho^3}{3}  \bigg ]^{9}_{0}

V = [ -0+ \dfrac{1}{\sqrt{2}}][2 \pi -0] [\dfrac{9^3}{3}- 0 ]

V = 243\sqrt{2} \ \pi

4 0
3 years ago
This is the range of sample statistics obtained when many samples are selected?
Leno4ka [110]
The range of sample statistics obtained when many samples are selected is a sampling distribution. A sampling distribution is also a probability distribution of the statistics obtained in the large number of samples drawn from a specific population. It also shows every possible result that the statistic can take in every possible sample from the population and how often will each results happens.
4 0
3 years ago
Can anyone help me out with this math problem?
inna [77]
The slope is negative
8 0
3 years ago
What city was the first capital of the United States?​
Wewaii [24]

I believe New York City was the first capital of the US.

3 0
2 years ago
Read 2 more answers
The fraction 5/3 has what as the denominator
Lyrx [107]

Answer:3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • the bike course is 80 miles long and I have ridden 44 miles of the course. what percentage have avridden?
    8·1 answer
  • Kim need to place 32 mystery books and 56 biology books on the library shelves. She is to place the maximum number of books on e
    7·2 answers
  • What percent of 63.8 is 37.8?
    12·1 answer
  • A restaurant earns $1073 on Friday and $1108 on Saturday. Write and solve an equation to find the amount xx (in dollars) the res
    13·1 answer
  • Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of \$65$65dollar sign, 65 along with an ho
    14·1 answer
  • Suppose that we don't have a formula for g ( x ) g(x) but we know that g ( 1 ) = − 1 g(1)=-1 and g ' ( x ) = √ x 2 + 15 g′(x)=x2
    7·1 answer
  • Help please, I'm stuck on this :/
    15·1 answer
  • Given the data below, what is the median?<br> 2, 4, 7, 4, 3, 1, 6, 8, 10, 15, 12, 22, 12, 15, 11
    6·2 answers
  • Which orded pair is a solution of the equation 2x+4y=6x-y
    5·1 answer
  • From the top of the Eiffel tower, which is 984 feet tall, you look down and see your friend at a 60°
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!