Describe the type of correlation each scatter plot shows. Draw a trend line that
models each data set and find the equation of that trend line.
Answers
The correlation coefficients off both the scatter plots are mentioned above.
What is correlation?Correlation is a statistical measure that expresses the extent to which two variables are linearly related.The sample correlation coefficient is defined as[tex]${\displaystyle {\begin{aligned}r_{xy}&={\frac {\sum x_{i}y_{i}-n{\bar {x}}{\bar {y}}}{ns'_{x}s'_{y}}}\\[5pt]&={\frac {n\sum x_{i}y_{i}-\sum x_{i}\sum y_{i}}{{\sqrt {n\sum x_{i}^{2}-(\sum x_{i})^{2}}}~{\sqrt {n\sum y_{i}^{2}-(\sum y_{i})^{2}}}}}.\end{aligned}}}[/tex]
where [tex]{\displaystyle s'_{x}}[/tex] and [tex]{\displaystyle s'_{y}}[/tex] are the uncorrected sample standard deviations of
X and Y.
Given are the scatter plot graphs as shown.
For the graph {1}, the correlation coefficient is positive and is in range of between 0.7 to 0.8
For the graph {2}, the correlation coefficient is negative and is in range of between -0.4 to 0.45
Therefore, the correlation coefficients off both the scatter plots are mentioned above.
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Related Questions
Woodbury Middle School has 270 girls and Valley Middle School has 206 girls. Which school has
a greater percentage of girls? Determine the percentage for each school.
Answers
Woodbury Middle School has a greater percentage of girls, as it has 56.72% against 43.28% of Valley Middle School.
Given that Woodbury Middle School has 270 girls and Valley Middle School has 206 girls, to determine which school has a greater percentage of girls, the following calculation must be performed:
270 + 206 = 476 476 = 100 270 = X 270 x 100/476 = X 56.72 = X
Therefore, Woodbury Middle School has a greater percentage of girls, as it has 56.72% against 43.28% of Valley Middle School.
Learn more about maths in https://brainly.com/question/25901815
23. Island cruises booked a group of vacationers on a cruise that has a fixed cost of $39,600. Later, 100 more
people join the cruise, and the average cost decreases by $275 per person. How many persons were booked
originally?
Answers
See attached picture
PLZ HELP DUE TODAY BRAINLIEST AND 100 POINTS
5(2.2y+1)-3
11y+5-y
11y+2
Answers
Answer:
Step-by-step explanation:
Remove the brackets
5*2.2y + 5 - 3
11y + 5 - 3
11y + 2
The answer is the last one.
[tex]\\ \rm\rightarrowtail 5(2.2y+1)-3[/tex]
Solve in between the brackets
[tex]\\ \rm\rightarrowtail 5(4y+1)-3[/tex]
[tex]\\ \rm\rightarrowtail 20y+5-3[/tex]
[tex]\\ \rm\rightarrowtail 20y+2[/tex]
[tex]\\ \rm\rightarrowtail 2(10y+1)[/tex]
Hep help help math math math
Answers
Answer:
525
Step-by-step explanation:
hope this helps
Answer:
526
Step-by-step explanation:
Justin's pays is represented by this line graph.
How much is Justin paid for one hour of work?
Answers
Answer:
He is been paid $7 per hour
Step-by-step explanation:
140dollars/ 20 hours
Can you help me with this question please!!
Answers
Answer:
Can you help me with this question please!! (D)
What is greater -5 1/2 or 6.5
Answers
Answer:
6.5
Step-by-step explanation:
As we can see: -11/2 < 13/2
So -5 1/2 < 6.5
2-4(3+4k)=54
Distributing^^^^^^
Answers
Answer:
Ok that is good
Step-by-step explanation:
Answer:
k = 3.2
Step-by-step explanation:
2 - 4(3 + 4k) = 54
=> 2 - 12 + 20k = 54
=> -10 + 20k = 54
=> 20k = 64
=> k = 3.2
Hoped this helped.
NEED HELP ASAP 50 POINTS PLEASE DO ALL OF THEM !!!!!in the item Bank are key terms and expressions, each of which is associated with one of the columns. Some terms may display additional information when you click on them. Drag and drop each item into the correct column. Order does not matter. 1 2 4 3 5/6 7 8 ITEM BANK Move to Bottom 1&8 267 3 &5 3 & 6 3 & 8 4 & 5 4 & 6 4&7 Alternate Interior Zs Corresponding Ls Alternate Exterior Zs Consecutive Interiors 1 & 5 2 & 6
Answers
Answer:
the top two on the right hand corner go in coressponding the one by the middle of the top row gos in alternative int and the far left gos in alt in bottom two go in cosecutive the middle far right go alt int middle row far left consecutive interior left gos alt ext and middle row right gos alt
Step-by-step explanation:
Sorry if this is late lol. Hope this helps other people too though.
Alternative interior
4 & 6
3 & 5
Corresponding
1 & 5
4 & 7
2 & 6
3 & 8
Alternative
1 & 8
2 & 7
Consecutive
4 & 5
3 & 6
Miles bought 3.75 acres of land in 1993. In 1997, he bought enough land to double his property. Then in 2001, Mis was forced to sell 2.9 acres of land. In 2005, he gave 25% of his remaining land to his daughter. If he did not buy or sell and more land, how much land does miles have now.
A. 2.6 acres C. 7.8 acres
B. 3.45 acres D. 1.15 acres
Answers
Answer: B: 3.45
Step-by-step explanation: First, we take 3.75 and double it, or multiply it by 2 giving us 7.5, then, we subtract 2.9 from 7.5, giving us 4.6. then we take away 25% of 4.6, or 1.15, giving us *3.45*.
Find an equation of the line described. Write the equation in slope-intercept form when possible.
Through (-8, -7), perpendicular to the y-axis
The equation of the line is y=
(Simplify your answer. Use integers or fractions for any numbers in the expression.)
Answers
Answer:
-7
Step-by-step explanation:
Because the step in puting slope is respectly (x,y)
Find a formula for the Nth term of sequence:
3,5,9,17
Answers
Answer:
an = 1 +2^n
Step-by-step explanation:
The given terms do not have a common ratio or a common difference. The differences of the given terms are ...
5 -3 = 2
9 -5 = 4
17 -9 = 8
These differences have a common ratio of 2, indicating an exponential sequence with a base of 2.
The terms 2^n are 2, 4, 8, 16. We notice that the given terms are 1 more than these values. The sequence is ...
an = 1 +2^n
Answer:
Try!
Step-by-step explanation:
Bianca calculated the height of the equilateral triangle with side lengths of 10.
tangent (30) = StartFraction 5 Over h EndFraction An equilateral triangle with side lengths of 10 is shown. A bisector is drawn to split the side into 2 equal parts and splits the angle into 2 30 degree segments.
Then, she used the formula for area of a triangle to approximate its area, as shown below.
A = one-half b h. = one-half (10) (8.7). = 43.5 units squared.
Calculate the area of the equilateral triangle using the formula for area of a regular polygon, and compare it to Bianca’s answer.
The apothem, rounded to the nearest tenth, is
units.
The perimeter of the equilateral triangle is
units.
Therefore, the area of the equilateral triangle is
, or approximately 43.5 units2.
The calculated areas are
.
Answers
Answer:
The apothem, rounded to the nearest tenth, is
2.9 units.
The perimeter of the equilateral triangle is
30 units.
Therefore, the area of the equilateral triangle is
1/2(2.9)(30), or approximately 43.5 units2.
The calculated areas are
the same, despite using different formulas.
Step-by-step explanation:
Edge
what equation can help you find out how many adults are there if tickets cost $9 for adults plus one child and $3 for children the total cost of the movie is $48
Answers
Answer:
48 ÷12 will help you 48 is cost divided by total cost which means cost of one adult and one child
Each mobile bags sold by Ravi’s marble company contains 4 purple marbles for every 7 orange marbles if the bag is 56 orange marbles how many purple marbles does it contain
Answers
Answer:
56/7 is 8 so 8x4 is 32 is is easy
The number of purple marbles that the bag contains out of total marbles in the bag is 32.
To find the number of purple marbles in the bag, we can use the given information that each bag contains 4 purple marbles for every 7 orange marbles.
Let's calculate the number of purple marbles in the bag:
1. Given: The bag contains 56 orange marbles.
2. Since the ratio of purple marbles to orange marbles is 4:7, we can set up a proportion:
Purple marbles / Orange marbles = 4 / 7
3. Substitute the given number of orange marbles (56) into the proportion:
Purple marbles / 56 = 4 / 7
4. Now, solve for the number of purple marbles (Purple marbles):
Purple marbles = (4 / 7) * 56
Purple marbles = (4 * 56) / 7
Purple marbles = 224 / 7
Purple marbles = 32
So, the bag contains 32 purple marbles.
Learn more about ratio here
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In triangle ABC, D is the midpoint of side AB and E is the midpoint of side BC. The area of triangle ABC is 56 square units. Find the number of square units in the area of triangle DBE.
Answers
Answer:
YourMom Not Cool
Step-by-step explanation:
yourMom is not cool
STOP CHEATING AND TRYING TO SEE ANSWER
Answer:
5
Step-by-step explanation:
The area of a rectangle is greater than or equal to 42 square centimeters. The width of the rectangle is 6 centimeters and the length is
centimeters. Select the possible value(s) of a.
7
Answers
Answer:
≥7
Step-by-step explanation:
6x7=42
Hope that helps
Answer:
x≥7
Step-by-step explanation:
4x^2+8x-12 in vertex form
Answers
Answer:
y = 4 (x + 1)² - 16
Step-by-step explanation:
Step 1: Equation at the end of step 1
(2²x²+8x)-12
Step 2:
Step 3: Pulling out like terms
Pull out like factors :
4x² + 8x - 12 = 4 • (x² + 2x - 3)
Trying to factor by splitting the middle term
Factoring x²+ 2x - 3
The first term is, x²
its coefficient is 1 .
The middle term is, +2x its coefficient is 2 .
The last term, "the constant", is -3
Step-1 : Multiply the coefficient of the first term by the constant 1 • -3 = -3
Step-2 : Find two factors of -3 whose sum equals the coefficient of the middle term, which is 2 .
-3 + 1 = -2
-1 + 3 = 2 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -1 and 3
x² - 1x + 3x - 3
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-1)
Add up the last 2 terms, pulling out common factors :
3 • (x-1)
Step-5 : Add up the four terms of step 4 :
(x+3) • (x-1)
Which is the desired factorization
Final result :
Final result :
4 • (x + 3) • (x - 1)
Now convert to vertex form:
y = 4 (x + 1)² - 16
10. Find the value of x.
(5x+12)° (3x+8)°
10
15
20
25
Answers
Answer:
3x+8+5x+12
8x+20=180
A. 80+20=100 No
B. 120+20=140 No
C. 160+20=180 Yes
D. 200+20=220 No
The Answer is C
Hope This Helps!!!
Answer:
x = 20
Step-by-step explanation:
The triangle has 2 congruent sides and is therefore isosceles with 2 congruent base angles, both 3x + 8
5x + 12 and 3x + 8 lie on a straight line and sum to 180° , that is
5x + 12 + 3x + 8 = 180
8x + 20 = 180 ( subtract 20 from both sides )
8x = 160 ( divide both sides by 8 )
x = 20
Find y
Find m
Find m
Answers
Answer:
y= -21; m∠MNO=40°.
Step-by-step explanation:
1) m∠MON+m∠MNO=90°;
2) -3y-13°-2y-2°=90°;
5y=-105°; ⇒ y= -21;
3) m∠MNO=-2y-2°=42°-2°=40°.
The numbers 5 and -5 are opposites.explain why 5 and -5 have the same absolute value
Answers
Answer:
I think because the absolute value is always a positive number.
Step-by-step explanation:
Solve for h. (h − 8)(h + 2) = 0
Answers
Answer:
donwload the gautmaht this is very powerful calculator to math problems
Step-by-step explanation:
make this is helpful too you
al dividir A entre 23 se obtuvo 247 de cociente y el residuo fue el maximo. hallar A a)5242 b)5436 c)5703 d)5332 solo esas 4 alternativas tienen que salirte y respondan con resolucion plss
Answers
Aplicando la división, hay que el valor de A es dado por:
c) 5703
Una división es representada por:
[tex]\frac{a}{b} = c + \frac{r}{b}[/tex]
En que:
c es el cociente.r es el residuo.En este problema, [tex]b = 23[/tex], y también:
Cociente de 247, o sea, [tex]c = 247[/tex].Residuo maximo, que es 22, o sea, [tex]r = 22[/tex].[tex]\frac{a}{b} = c + \frac{r}{b}[/tex]
[tex]\frac{A}{23} = 247 + \frac{22}{23}[/tex]
[tex]A = 23(247) + 22 = 5703[/tex]
El valor de A es dado por:
c) 5703
Un problema similar, que tambíen envuelve división, es dado en https://brainly.com/question/14270856
9/5 - (-2 7/10) and write it as a fraction and simplest form
Answers
Answer:
probably 4.5 if im not mistaking
Answer:
4 1/2
Step-by-step explanation:
(-2 7/10) = (-2.7)
9/5 = 1.8
1.8 - (-2.7)
= 1.8 + 2.7
= 4.5 or 4 1/2
Please help me!
ty ty :)
Answers
Answer:
The answer is steeper.
I'm not sure about the slope thingy. But the line looks Steeper instead of flatter
Help help hep math math
Answers
[tex]300 {ft}^{2} [/tex]
Step-by-step explanation:
d=20
r=10
π=3
[tex]a = \pi{r}^{2} [/tex]
[tex]a = (3) {(10)}^{2} [/tex]
[tex]a = 300[/tex]
Answer:
A = 300 ft^2
Step-by-step explanation:
First we need to find the radius
r = 1/2 d
The diameter is 20
r = 1/2(20) = 10
A =pi r^2
We are using 3 for pi
A = 3( 10)^2
A = 3 * 100
A = 300 ft^2
Please help again forgot everything
Again
Answers
Answer:
Option D
Step-by-step explanation:
a/3 = 8/6
a × 6 = 8 × 3
6a = 24
a = 24/6
a = 4
Hence,
Option A is correct
Answer:
4
Step-by-step explanation:
cross multiply
a x 6=3 × 8
or,a=24/6
There fore a=4
graph -1,-1 on this graph
Answers
Answer:
so that's how you plot their intersection
Triangle DCB is congruent to triangle IGH what is an less than H
Answers
Answer:
no cuh
Step-by-step explanation:
Write the following statements in the form of equations.
If you subtract 6 from 3 times a number, you get 18.
Answers
Let the Number be x
The required Equation Will Be:
3x-6=18
3x=18+6
3x=24
x=8