Which of the following correlation coefficients expresses the weakest degree of relationship between two variables?

Mathematics

1 answer:

Montano1993 [528]3 years ago

6 0

The correlation coefficient between the variables are always between +1 and -1

If the correlation coefficient is near to +1 the degree of relationship between variables is strongly positively correlated. And if the correlation coefficient is near to -1 the degree of relationship between variables is strongly negatively correlated.

Hence at the extremes +1 and -1, there is a strong degree of relationship between two variables

Near to 0 (the middle of the range), there is a weak degree of relationship between two variables

So, the answer would the value the is nearest to 0 since we want a weak relationship

The value that is nearest to 0 is a) 0.10

So, the answer is a)0.10

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What is the slope of the line containg (-2,5) and (4,-4)

Zanzabum

Answer:

-3/2

Step-by-step explanation:

(Y2-Y1)/(X2-X1)

(-4 - 5) / (4 - (-2))

-9 / 6

Simplified: -3/2

5 0

2 years ago

Question content area top

Natali5045456 [20]

The circumference of the outer circle is greater than that of the inner circle by 18.86 feet.

<h3>What is Circle?</h3>

A circle is a round 2-dimensional shape. It is a closed shape with a distance from center to circumference termed as radius 'r' and distance from one point on the circumference to another point passing through center termed as diameter 'd'.

The circumference of the inner circle is 88 ft.

Circumference of a Circle = 2πr

2πr = 88

2 X 22/7 X r = 88

r = 88 X 7 / 44

r = 14 ft.

Radius of the inner circle = 14 feet

If the distance between the inner circle and the outer circle is 3 ft, the radius of the outer circle = 14+3 = 17 feet.

circumference of the outer Circle = 2πr

= 2 X 22/7 X 17

= 106.86 ft.

Difference in Circumference = 106.86 - 88 = 18.86 feet