All categories

3 years ago

What is rank correlation?

Mathematics

1 answer:

Irina-Kira [14]3 years ago

6 0

Step-by-step explanation:

it's any of several statistics that measure an ordinal association. Measures the degree of similarity between two rankings.

You might be interested in

The force exerted by an electric charge at the origin on a charged particle at a point (x, y, z) with position vector r = x, y,

suter [353]

Answer:

$\frac{25k}{34}[\frac{1}{4}-\frac{1}{50^{1/2}}] \\$

Step-by-step explanation:

The straight line path between point (a,b,c) and (l,m,n) is parametric by the expression

$r(t)=(1-t)(a,b,c) +t(l,m,n)\\$

since we are giving point (4,0,0) and (4,3,4), the parametric equation is giving below

$r(t)=(1-t)(4,0,0) +t(4,3,4)\\$

using the dot product system of multiplication, we have

$r(t)=(4,3t,4t) \\$

t is between 0,1.

Next we define the line integral for work done which is express as

$\int\limits^a_b {F.} \,dr\\$

First we define the general expression for the force

$f(x,y,z)=\frac{K(x,y,z)}{(x^{2}+y^{2}+z^{2})^{3/2}} \\$

If we substitute our parametric equation we arrive at

$F(r(t))=\frac{K(4,3t,4t)}{(4^{2}+(3t)^{2}+(4t)^{2})^{3/2}}\\F(r(t))=\frac{K(4,3t,4t)}{(16+34t^{2})^{3/2}}\\$

also we need to find the expression for <em>dr</em>

$r(t)=(4,3t,4t)\\dr=(0,3,4)dt\\$

Now we substitute into the integral expression

$\int\limits^1_0 {\frac{k(4,3t,4t)}{(16+34t^{2})^{3/2}}} \, .(0,3,4)dt$

using dot product we arrive at

$\int\limits^1_0 {\frac{25kt}{{(16+34t^{2})^{3/2}} } \,$

let make a simple substitution so we can simplify the integral,

let assume $u=16+34t^{2}\\$

$\frac{du}{dt}=68t\\ dt=\frac{du}{68t} \\$

and changing setting the new upper and lower limit, we have

$\frac{25k}{68} \int\limits^a_b {\frac{1}{u\frac{3}{2} } } \, du\\a=50\\b=16\\$

by simple integral we arrive at

$-\frac{25k}{34}[\frac{1}{u^{1/2}}] ^{50}_{16} \\\frac{25k}{34}[\frac{1}{4}-\frac{1}{50^{1/2}}] \\$

Hence the workdone is

$\frac{25k}{34}[\frac{1}{4}-\frac{1}{50^{1/2}}] \\$

3 0

3 years ago

What would it cost Leopold to put decorative fencing along the top and bottom lengths of the fencing costs $2.25 per foot?

Ann [662]

270 dollars because 1440 divided by 12 equals 120. 120 times 2.25

is $270.000

5 0

3 years ago

PLEASE HELP. Will give brainliest. A number divided by 4, minus 3 is 0. What is the number?

anzhelika [568]

Answer:

the answer is 12

Step-by-step explanation:

12÷4 =3-3=0

5 0

3 years ago

Read 2 more answers

Inside the container there is empty space not taken up by the volleyball. What is the volume of that empty space? Use 3.14 for π

marta [7]

Answer: 4,599 I'm going to say this based off my test. Yet you didn't say how big the volleyball was. For example, if it was like 12 or 14 inches. I can change my answer if you are more detailed. Have a nice day!

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Jay earned $432.18 in net pay for working 32 hours. He paid $82.42 in federal and state taxes, and $31.70 in FICA taxes.

Neporo4naja [7]

1) $17.07
2)$97.22
3) 79%

3 0

4 years ago

Read 2 more answers

What is rank correlation?​

What is rank correlation?