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3 years ago

Which of the following correlation coefficients represents the strongest correlation?

Mathematics

1 answer:

Oxana [17]3 years ago

6 0

Answer:

Option C (-0.922107932)

Step-by-step explanation:

Correlation is a concept which explains a linear relationship between two variables. The correlation constant lies between -1 and 1. 0 lies in the center of the interval. A negative correlation means an inverse relationship, and a positive correlation means a direct relationship. 0 technically means no linear relation between the variables. Further the correlation constant lies from 0, more the strength of the relationship. This means that closer the correlation to 1, stronger the positive relationship, and closer the correlation to -1, stronger the negative relationship. It can be seen that Option C (-0.922107932) is the correlation coefficient which is the largest in terms of the magnitude. Therefore, Option C is the correct choice!!!

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3 years ago

The width of a rectangle is 9 less than the length. If the perimeter is 130 cm, find the length and the width of the rectangle.

pochemuha

Answer

B. Length = 37, width = 28

Explanation

Let the length of the rectangle be x,

width is 9 less. So, width = x - 9

Perimeter of a rectangle = 2(length + width)

2(length + width) = 130

2(x + x - 9) = 130

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5 0

3 years ago

The marked price of an article is 30% above it's selling price and the cost price is 35%less than it's marked price. find the di

SashulF [63]

Answer:

Let C be the cost price of the article. Then:

C(1+30%)=marked price

So:

C(1+30%)=C(1.3)

=1.3C

If the article is then marked down 35%, then its’ price would be:

1.3C(1–35%)=1.3C(.65)

=0.845 or 84.5% of its’ cost

Then:

0.845–1=-0.155

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4 years ago