What is formula for Correlation of Karl's Pearson (Short-cut Mean Method)?


❥[tex] \huge { \mathfrak{\fbox{ \green{Correlation}}}}[/tex]

Answers

Answer 1

[tex]r = \frac{Σ(X-X)(Y-Y)}{\sqrt{Σ(X-X)²} \sqrt{(Y-Y)²}}[/tex]

Where, X-mean of X variable

Y - mean of Y variable


Related Questions

maths equation i need help with

Answers

Answer:

2^11 * 3^3 * 5^6.

Step-by-step explanation:

c = 2^10 * 3 * 5^6

18c =  2^10 * 3 * 5^6 * 18

= 2^10 * 5*6 * 54

= 2^10 * 5^6 * 2 * 27

= 2^10 * 5^6 * 2* 3^3

= 2^10 * 2 * 3^3 * 5^6

= 2^11 * 3^3 * 5^6

i need help (please help me)

Amelie spins the following spinner, which has 10 equally sized spaces numbered 1 through 10. The numbers 1 and 7 are colored blue; the numbers 2, 4, and 6 are red; and the numbers 3, 5, 8, 9, and 10 are green.

A spinner as described in the text.

What is the probability that Amelie spins either an odd number or a red number?

Enter your answer as a reduced fraction, like this: 3/14

Answers

Step-by-step explanation:

It's 4/5 as a reduced fraction.

HELP PLS WILL GIVE BRAINLIEST

Answers

Answer:

The answer is B and D :)

Step-by-step explanation:

It is b because the x value is getting bigger while the y value is getting smaller. :)

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

Options B and D

Step-by-step explanation:

Step 1:  Determine what negative association is

Negative association basically means that the best-fit line for the scatter plot would be in a downwards slope which means that it has a negative association.  

In the given examples, Option A wouldn't work because we can see that the best-fit line would be going up which is a positive association.  Option B would work because we see the downward slope.  Option C wond't work for the same reason as Option A.  And finally Option D would work since we have a downward slope.

Answer:  Options B and D

The dimensions of a
Blue
rectangular pyramid are shown in
the diagram. What is the volume
of the pyramid in cubic meters?

Answers

Answer:

8 cubic meters

Step-by-step explanation:

Formula for the volume of a rectangular pyramid:

[tex]V=\frac{lwh}{3}[/tex]

Take note

[tex]l=[/tex] base length

[tex]w=[/tex] base width

[tex]h=[/tex] pyramid height

We are given [tex]l[/tex], [tex]w[/tex], and [tex]h[/tex].

Lets solve for [tex]V[/tex]

[tex]l=3[/tex]

[tex]w=2[/tex]

[tex]h=4[/tex]

Now plug in our numbers into the formula:

[tex]V=\frac{3*2*4}{3}[/tex]

Evaluate the numerator

[tex]3*2*4=24[/tex]

Then we have

[tex]V=\frac{24}{3}[/tex]

Simplify and we get:

[tex]V=8[/tex]

A student said that the sum of the measures of a pair of adjacent angles must equal 180°. Is the student correct?
Choose the correct answer and explanation
OA) The student is correct; adjacent angles must share a common vertex and sum to 180°
OB) The student is not correct; two adjacent angles form a right angle, so the sum is always equal to 90°
OC) The student is correct; any pair of adjacent angles forms a straight line, and the angle measure of a straight line is 180°
D) The student is not correct; a pair of adjacent angles must share a common vertex, share a common side, and not overlap. They
may equal 180° but do not have to

Answers

Answer:

Step-by-step explanation:

D) The student is not correct; a pair of adjacent angles must share a common vertex, share a side, and not overlap have to

A circular fountain has 132 feet of railing around it. What is the area of the fountain, Use 3.14 for π.

Answers

Answer:

1387.2 ft² (nearest tenth)

Step-by-step explanation:

Formulae

Circumference of a circle = [tex]2 \pi r[/tex]Area of a circle = [tex]\pi r^2[/tex]

(where r is the radius of the circle)

The railing of the circular fountain is the circumference of a circle.

The area of the fountain is the area of a circle.

First, find the radius by using the circumference formula:

Given:

circumference = 132 ft

[tex]\implies 132=2 \pi r[/tex]

[tex]\implies r=\dfrac{132}{2 \pi}=\dfrac{66}{\pi}[/tex]

Now input the found value of r into the formula for the area of a circle:

[tex]\begin{aligned}\implies \textsf{Area} & =\pi \left(\dfrac{66}{\pi}\right)^2\\\\ & = \dfrac{4356}{\pi}\\\\ & = \dfrac{4356}{3.14}\\\\ & = 1387.261146...\\\\ & = 1387.3 \: \sf ft^2\:(nearest\:tenth)\end{aligned}[/tex]

PLS HELP!!! No links pls and Ty <333

Sid is making a pizza. The diameter of the pizza is 15 inches.
What is the area of the pizza (use 3.14 for pi and round to the nearest
tenth)?

Answers

Answer:

176.6 inches.

Step-by-step explanation:

15 is the diameter, so 15/2 is 7.5 which is the radius

A of a circle is 3.14 x r^2

7.5^2=56.25

56.25 x 3.14=176.625

rounded makes it 176.6

A door's shape is made by combining a rectangle and a semicircle. What is the area of the door?

Will mark brainlyest!!!

Answers

Answer:

I am not sure but I think the answer is 34.28

Step-by-step explanation:

Sorry if that is the wrong answer

Hope this helped

Answer:

34.28 ft^2

Step-by-step explanation:

Area of rectangular portion  7 x 4 = 28

 area of semicircle with radius 2

     1/2   *  pi (2)^2

Added together = 34.28 ft^2

What is the range of the data set? 32, 21, 88, 64, 88, 107, 101 enter your answer in the box.

Answers

The answer is 86 because 107 minus 21 equals 86

Please help, select all that apply

Answers

Answer:

Answer is

B. (Related with F)

C. (Related to the number of cars)

D. (Related with F)

F.

Hope it helps

BYE

Which shows one way to determine the factors of 12x3 – 2x2 18x – 3 by grouping? 2x2(6x – 1) 3(6x – 1) 2x2(6x – 1) – 3(6x – 1) 6x(2x2 – 3) – 1(2x2 – 3) 6x(2x2 3) 1(2x2 3)

Answers

The factor of the given expression 12x^3 - 2x² + 18x-3 is as follows (6x-1)(2x²+3).

What is a quadratic equation?

A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is  ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

The given expression is

12x^3 - 2x² + 18x-3

= 2x²(6x-1) + 3(6x-1)

= (6x-1)(2x²+3)

Learn more about quadratic equations;

brainly.com/question/13197897

Answer:

A.

Step-by-step explanation:

What shape is created by the rotation and what is the approximate circumference of the base? circumference of a circle: c = 2πr a cylinder with a circumference of about 63 mm a cylinder with a circumference of about 126 mm a cone with a base circumference of about 63 mm a cone with a base circumference of about 126 mm

Answers

The triangle is rotated about an axis then it creates a cone and the approximate circumference of the base is 63 mm. Then the correct option is C.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The equilateral triangle shown is rotated about line a.

Each side of the triangle measures 20 mm.

If the triangle is rotated about an axis then it creates a cone.

Then the radius of the cone will be

[tex]\rm r = \dfrac{20}{2} = 10 \ mm[/tex]

Then the height of the cone will be

[tex]\rm h = 20 \sin 60^o\\\\h = 17.32 \ mm[/tex]

Then the circumference of the base circle will be given as

[tex]\rm Circumference = 2 \pi r\\\\Circumference = 2 \pi \times 10\\\\Circumference = 62.8318 \approx 63 \ mm[/tex]

More about the geometry link is given below.

https://brainly.com/question/7558603

Answer:

C. A cone with a base circumference of about 63 mm !!!

Step-by-step explanation:

Correct on Edge2022 <3

What is the equation of the line x–3y=18in slope-intercept form?


Drag and drop the appropriate number, symbol, or variable to each box.

Response areaResponse areaResponse areaResponse areaResponse areaResponse area

Answers

The answer is y=1/3x-6

Car insurance companies want to keep track of the average cost per claim. The current data in use for Auto Insurance R Us is an average of $2,200 for each claim with a standard deviation of $500. With this average, the company can stay competitive with rates but not lose money. However, the statistician for the company believes that the cost of the average claim has increased. He pulled 40 recent claims and found the average to be $2,350. Which most restrictive level of significance would suggest that the company should raise rates

Answers

Answer:

The answer is 5% because its correct lol

Step-by-step explanation:

The most restrictive level of significance that would suggest the company should raise rates is a p-value less than or equal to 0.01.

What is hypothesis testing?

Hypothesis testing is a statistical method that is used to make decisions about a population based on a sample of data.

It involves testing a null hypothesis (H0) against an alternative hypothesis (Ha) using statistical techniques.

We have,

To determine if the increase in the average cost per claim is statistically significant, we can perform a hypothesis test.

Let's use a one-sample t-test, where:

Null hypothesis (H0): The average cost per claim is still $2,200.

Alternative hypothesis (Ha): The average cost per claim is greater than $2,200.

We can use a t-test because we have a sample mean, sample size, and population standard deviation.

The test statistic is calculated as:

t = (sample mean - hypothesized mean) / (standard deviation/√ (sample size))

Plugging in the values given, we get:

t = (2350 - 2200) / (500 / √(40))

t = 4.38

Using a t-table with degrees of freedom (df) = 39 (sample size - 1), we can find the p-value associated with this test statistic.

At the 0.01 level of significance (most restrictive level), the critical t-value is 2.704.

Since our calculated t-value is greater than the critical t-value, we reject the null hypothesis and conclude that there is evidence to suggest that the average cost per claim has increased.

Therefore,

The most restrictive level of significance that would suggest the company should raise rates is a p-value less than or equal to 0.01.

Learn more about hypothesis testing here:

https://brainly.com/question/30588452

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Solve the quadratic function by completing the square. what are the missing pieces in the steps? –32 = 2(x2 10x) –32 = 2(x2 10x 25) 18 = 2(x 5)2 9 = (x 5)2 ± = x 5 x = –2 or x =

Answers

An equation is formed of two equal expressions. The missing pieces of the solution of the quadratic equation are 50, 3, and -8.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

To fill the missing piece of the solution of the quadratic equation, you need to balance each of the equations. Therefore, the solution to the problem can be written as,

[tex]-32 = 2(x^2 + 10x)\\\\-32 + 50 = 2(x^2 + 10x + 25)\\\\18 = 2(x + 5)^2\\\\9 = (x + 5)2\\\\\pm 3= x + 5\\\\x = -2\ \ {\rm or}\ \ x = -8[/tex]

Thus, the solution of the quadratic equation is -2 or -8.

Hence, the missing pieces of the solution of the quadratic equation are 50, 3, and -8.

Learn more about Equation:

https://brainly.com/question/2263981

What type of polygon is needed to use the Pythagorean theorem?


A. Acute triangle


B. Right triangle


C. Rectangle


D. Isosceles triangle

Answers

Ahh, yes, the Pythagorean Theorem!

The Pythagorean Theorem is applied to right triangles. Only right triangles. So our answer would be B.

I hope this makes sense. I can continue to expand on this if you like.

-Toremi

The correct answer is option (B) Right triangle.

What is a right triangle?

A triangle with one of its angles measuring 90° is known as a right triangle.

The Pythagorean theorem is applicable only to a right triangle.

The Pythagorean theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the legs of the triangle.

Hence, the correct answer is option (B) Right triangle.

Learn more about right triangles here:

https://brainly.com/question/4364353

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What is the perimeter of a shape?

Answers

Perimeter is the combined ammount of all the sides added together.

For example, if a square has sides of 4, it would be 16 because 4+4+4+4 = 16 units.

Answer:

Perimeter is the total distance around the outside of a shape.

Step-by-step explanation:

A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference. Calculating the perimeter has several practical applications. A calculated perimeter is the length of fence required to surround a yard or garden. The perimeter of a wheel/circle (its circumference) describes how far it will roll in one revolution. Similarly, the amount of string wound around a spool is related to the spool's perimeter; if the length of the string was exact, it would equal the perimeter.

-

Hope it helps you :)

pls mark brainleist :P

`

`

`

Tori

A square is circumscribed about a circle with a diameter of 10 cm. What is the correct set up to find the area of the shaded region?

Answers

Answer:

21.5 cm² (nearest tenth)

Step-by-step explanation:

FormulaeArea of a square = x² (where x is the side length)Area of a circle = πr²  (where r is the radius)Radius = 1/2 diameter

Solution

To find the shaded region, subtract the area of the circle from the area of the square.

Square

Area of the square = 10² = 100 cm²

Circle

Given diameter of circle = 10 cm

⇒ radius = 10 ÷ 2 = 5 cm

⇒ Area of the circle = π · 5² = 25π cm²

Area of shaded region

= area of square - area of circle

= 100 - 25π

= 21.46018366...

= 21.5 cm² (nearest tenth)                                  

Please answer asap. The question is how many is tablets is given in 24hrs

Answers

Answer:

So first, we figure out the maximum the patient could be taking each day: 2 tabs every 4 hours = 12 tabs per day at the most.

(x + 4) (x - 4) - x² + 16

Answers

Answer:

infinite solutions

Step-by-step explanation:

Hey there!

In order to solve this problem, we need to first distribute the [tex](x+4)(x-4)[/tex]

This is equal to [tex]x^2-16[/tex]

Now we can combine like terms

[tex]x^2[/tex] and [tex]-x^2[/tex] cancel out

also

[tex]16[/tex] and [tex]-16[/tex] cancel out

The equation ends up as 0 = 0

So the answer to this answer is infinite solutions

what two numbers add up to -12 and multiply to 36​

Answers

-6 + (-6) = -12
-6 * -6 = 36

Answer:

-6 and -6

Step-by-step explanation:

[tex](-6)+(-6)=(-12)\\(-6)(-6)=36[/tex]

Adding a negative is the same as subtracting.

Multipling a negative by a negative is the same as multiply two even numbers. The negative signs cancel each other out.

What is 1+2_#_+#+#+#+3?

Answers

Answer:

Noice

Step-by-step explanation:

How to subtract mixed numbers with unlike denominators?.

Answers

To subtract mixed numbers with different denominators, follow these steps:

1. Rename the fractions using a common denominator.

2. Subtract whole numbers from whole numbers. You might need to regroup first.

3. Subtract fractions from fractions.

4. Simplify, if needed.

Let's try it with [tex]2\frac{3}{5}-1\frac{1}{4}[/tex]

First, rename the fractions using a common denominator. The least common denominator of these fractions is 20. Multiply to make equivalent fractions with 20 as the denominator.

[tex]\frac{3x4}{5x4}=\frac{12}{20}[/tex]        [tex]\frac{1x5}{4x5}=\frac{5}{20}[/tex]

Rewrite the problem and subtract the whole numbers.

[tex]2\frac{12}{20}-1\frac{5}{20}=1\frac{?}{?}[/tex]

Now, subtract the fractions. Subtract the numerators and keep the denominator the same.

[tex]2\frac{12}{20}-1\frac{5}{20}=1\frac{7}{20}[/tex]

This answer is already in its simplest form, so there is no need to simplify it.

I promised to do my gfs homework but I'm mostly clueless someone help pls

Answers

Answer:

Read Step by step

Step-by-step explanation:

For number 5. This is the Transitive property because they mirror each other.

for 3, this is the symmetric property as they are split by a single shared line and they are both of equal properties.

Can you help finish my trigonometry maze?? And show me the equation for each I know some of them are finding angles and I’m stuck please help.

Answers

Using the trigonometric ratios of sine, cosine and tangents will help solve navigate the maze.

What is trigonometry?

Trigonometry is the study of the relationships between side lengths and angles of triangles.

The three main trigonometry functions are sine, cosine and tangent.

For right-angled triangles, the ratios of the three trigonometric functions are:

Sine = opposite/hypotenuseCosine = adjacent/hypotenuse Tangent = opposite/adjacent

For the given maze, the missing measures are found using the angles and the side given.

For example:

tan 52 = 40/x

x = 40/tan 52 = 31.3

Therefor, using the trigonometric ratios will help solve navigate the maze.

Learn more about trigonometry at: https://brainly.com/question/24236629

Please help me asap with my grade 11 trigonometry math! I'll give brainliest, please help, thank you. *URGENT*

Answers

Answer:

37.8579

This value is approximate and rounded to four decimal places

===============================================

Explanation:

The tangent function is being applied to some unknown angle x. To isolate x, we undo whatever tangent is doing. So we apply the inverse function. Specifically the inverse tangent function. This is also known as "arctangent" and your calculator most likely shows it as a button with a "-1" exponent above the "tan"

So apply the arctangent to both sides to get

tan(x) = 0.7773

arctan(tan(x)) = arctan(0.7773)

x = 37.8579

heres a diagram to help

what is the distance between the points (-7, -8) & (2, -8)

Answers

Answer:

5 units cause that ordinates are same abssisae is different

. What is the area of this polygon?
6 cm
8 cm
4 cm
18 cm?
40 cm?
16 cm
24 cm2

Answers

Answer:

B) 40cm²

Step-by-step explanation:

4*8=32/2=16

8*6=48/2=24

16+24=40

(A= b*h/2)

Hope this helped

The expression (8+8+8+8+8)−(6+6+6+6+6) is equal to 10 .
Use any of the operations below to create another expression that is equal to 10 , but only uses the numbers 6 and 8 .

Addition (+)
Subtraction (−)
Multiplication (⋅)
Division (÷)
Squaring ( )2
Square Root ( )−−√

Answers

Answer:

6²-(8+8)

Solution:There are plenty of expressions with numbers 6 and 8 that are equivalent to 10.Here is one of them:6²-(8+8)→36-16=10

Hope it helps.

Do comment if you have any query.

please help
photo down below

Answers

Answer:

x=102⁰

Step-by-step explanation:

180⁰-47⁰-31⁰=180⁰-78⁰=102⁰

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