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
Alexandra [31]
3 years ago
10

A national consumer magazine reported the following correlations.

Mathematics
1 answer:
OverLord2011 [107]3 years ago
5 0

Answer:

Correct option: (b).

Step-by-step explanation:

The correlation coefficient is a statistical degree that computes the strength of the linear relationship between the relative movements of the two variables (i.e. dependent and independent). It ranges from -1 to +1.

Negative correlation is a relationship amid two variables in which one variable rises as the other falls, and vice versa. A positive correlation occurs when one variable declines as the other variable declines, or one variable escalates while the other escalates.

In statistics, a perfect positive correlation is represented by +1 and -1 indicates a perfect negative correlation.

The closer the correlation value is to 1 the stronger the relationship between the two variables.

Let,

<em>X</em> = car weight

<em>Y</em> = car reliability

<em>Z</em> = annual maintenance cost

It is provided that:

Corr. (X, Y) = -0.30

Corr. (X, Z) = 0.20

The correlation coefficient of car weight and car reliability is negative. This implies that there is a negative relation between the two variables, i.e. as the weight of the car increases the reliability decreases and vice-versa.

And the correlation coefficient of car weight and annual maintenance cost is positive. That is, the two variables move in the same direction, i.e. as the weight of the car increases the annual maintenance cost also increases.

The correlation coefficient value of (X, Y) is closer to 1 than that of (X, Z).

This implies that the relationship between car weight and car reliability is much more stronger that the relationship between car weight and annual maintenance cost.

Thus, all the provided statement are correct.

Hence, the correct option is (b).

You might be interested in
Kevin uses each of the digits 5, 7, 4 and 9, once and once only, to make
photoshop1234 [79]

Answer: smallest 5794

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is the product of 6x-y and 2x-y+2?
Ganezh [65]
Product = multiply

(6x-y)*(2x-y+2) =

12x^2 -8xy + 12x + y^2 - 2y


6 0
3 years ago
Read 2 more answers
A colony of bacteria has 10,000 bacteria and is growing exponentially. The inequality 10,000(4x) ≥ 320,000 represents the hours,
dexar [7]

Answer:

A [2.5, ∞)

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Can someone help please. i’m struggling.
mario62 [17]

Answer:

try using desmos. its a graphing calculator

Step-by-step explanation:

7 0
2 years ago
As an office manager, you want to choose from buying a copier or renting one. You can buy one for $7000 with a fee of $30 a mont
Reptile [31]

Answer: you should rent one

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • Which events are dependent? Choose all that apply.
    14·2 answers
  • Point P is on line segment OQ. Given OQ = 4x + 2, PQ = 4x – 10, and
    9·2 answers
  • How do I solve 3xy-2x= 17
    10·1 answer
  • Which of the following is equivalent to 17g – 2g?
    5·1 answer
  • What is the interquartile range of this data?<br><br><br> 6<br><br> 8<br><br> 9<br><br> 20
    13·2 answers
  • A) Round 98984 to 1 significant figure.
    13·1 answer
  • Drag each label to the correct location on the table. Each label can be used more than once, but not all labels will be used.
    6·1 answer
  • Based on the table, what is the association between x and y?
    5·1 answer
  • A pair of parallel lines are translated. Which of these could be the result?
    7·2 answers
  • The First National Bank of Wilson has 700 checking account customers. A recent sample of 50 of these customers showed 29 have a
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!