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seraphim [82]
3 years ago
6

For which data set is a linear regression most reasonable?

Mathematics
2 answers:
Oxana [17]3 years ago
6 0

Answer:

The correct option is;

A. A set of nine data pairs with a correlation coefficient r = -0.4

Step-by-step explanation:

In statistical analysis, it is important to make use of an adequate sample size in order to arrive at a valid result. An analysis with a very small sample size can provide misleading results

When performing regression analysis it is generally accepted by researchers that each variable should have at least 10 observations.

Therefore, the data set having nine data pairs with a negative correlation of -0.4 will provide the most valid result that can then be used for generalization about the larger statistical population.

Arturiano [62]3 years ago
5 0

Answer:

C.

Step-by-step explanation:

edge 2020

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kupik [55]

The correct answers are:

1. 35

2. B.) Rational

3. -88/3 or as a decimal, 29.3 repeating

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5. -6

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5 0
3 years ago
Which equation would best help solve the following problem?
timurjin [86]
Y = yo + Vot - (gt^2)/2

0 = 0 + 31t - 4.9 t^2

0 = -4.9 t^2 + 31t

Answer: option A.
6 0
3 years ago
What is the percent of change from 75 to 84?
ValentinkaMS [17]

Answer:

12%

Step-by-step explanation:

3 0
2 years ago
Factorise<br><br> x^3 - 2x^2 -x+2
tankabanditka [31]

Answer:

Solution given:

x^3 - 2x^2 -x+2

take common from two each term

x²(x-2)-1(x-2)

take common again and keep left one on other bracket

<u>(x-2)(x²-1) or (x-1)(x+1)(x-2)</u> is a required answer.

note:using formula a²-b²=(a+b)(a-b) for x²-1.

5 0
3 years ago
Read 2 more answers
Daniel wants to buy cookies for her friends. The area of a cookie is 113.04 in2. What is the circumference of the cookie?
prisoha [69]

Answer:

The circumference of the cookie is 37.68 inches.

Step-by-step explanation:

We have,

The area of a cookie is 113.04 square inches.

It is circular in shape. The area of circle is given by :

A=\pi r^2

r is radius of circle

r=\sqrt{\dfrac{A}{\pi}} \\\\r=\sqrt{\dfrac{113.04}{3.14}} \\\\r=6\ \text{inch}

The circumference of circular shaped object is given by :

C=2\pi r\\\\C=2\times 3.14\times 6\\\\C=37.68\ \text{inch}

So, the circumference of the cookie is 37.68 inches.

7 0
3 years ago
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