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3 years ago

Define correlation coefficient

Mathematics

2 answers:

nadezda [96]3 years ago

6 0

Answer:

A correlation coefficient is a numerical measure of some type of correlation, meaning a statistical relationship between two variables. The variables may be two columns of a given data set of observations, often called a sample, or two components of a multivariate random variable with a known distribution.

Vlad1618 [11]3 years ago

5 0

Correlation coefficient is the relationship between two sets of variables used to describe or predict information.

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The foot of a ladder is placed 7 meters from a wall if The top of the ladder rests 9 meters up on the wall how long is the ladde

stepan [7]

Answer:

11.4018 meters

Step-by-step explanation:

The ladder, wall and floor together form a right triangle with the length of the ladder being the hypotenuse, the distance of the foot of the ladder from the wall being one of the shorter sides and the distance between the top of the ladder and the floor being the other side

We can use the Pythagorean theorem to solve for the hypotenuse given the two sides

The general formula is:

$c = \sqrt{a^{2} + b^{2}}$

where c is the hypotenuse and a and b the other two sides

Substituting a = 7 and b = 9 gives:

$c = \sqrt{a^{2} + b^{2}}\\\\c = \sqrt{7^{2} + 9^{2}}\\\\c = \sqrt{49 + 81}\\\\c = \sqrt{130}\\\\c = 11.4018$

So length of ladder = 11.4018 meters

5 0

1 year ago

Read 2 more answers

Uwu hi pls help! if you dont ill cry an bad sad :''((

ruslelena [56]

Answer:

The second choice

Step-by-step explanation:

6 - 3 1/3 = 2 2/3

5 0

4 years ago

Drag each tile to the correct location on the image. Each tile can be used more than once, but not all images will be used.

OverLord2011 [107]

Answer:

Switch x and y, and solve for y

$f^{-1}(x) =\frac{(x -4)^3}{8}$

Step-by-step explanation:

Given

$f(x) = 3\sqrt{8x} + 4$

Required

Complete the steps to determine the inverse function

Solving (a): Complete the blanks

Switch x and y, and solve for y

Solving (b): Determine the inverse function

$f(x) = \sqrt[3]{8x} + 4$

Replace f(x) with y

$y = \sqrt[3]{8x} + 4$

Switch x and y

$x = \sqrt[3]{8y} + 4$

<u>Now, we solve for y</u>

Subtract 4 from both sides

$x -4= \sqrt[3]{8y} + 4-4$

$x -4= \sqrt[3]{8y}$

Take cube roots of both sides

$(x -4)^3= 8y$

Divide both sides by 8

$\frac{(x -4)^3}{8} = y$

So, we have:

$y =\frac{(x -4)^3}{8}$

Hence, the inverse function is:

$f^{-1}(x) =\frac{(x -4)^3}{8}$

7 0

3 years ago

(b) Create a sequence that begins with a negative rational number, is increasing by addition, and is infinite

fgiga [73]

Answer:

an infinite is a list or string of discrete objects, usually numbers, that can be paired off one-to-one with the set of positive integer s {1, 2, 3, ...}.

Step-by-step explanation:

6 0

3 years ago

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To which of the following sets of numbers does ⅞ belong?

artcher [175]

Answer:

A. Rational number

Step-by-step explanation:

It is not a whole number or integer because it's a fraction. so it's the rational of a whole number.

7 0

3 years ago

Define correlation coefficient​

Define correlation coefficient