1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dsp73
3 years ago
11

Calculus A hard problem help please

Mathematics
2 answers:
erastovalidia [21]3 years ago
4 0

Answer:

X Values

∑ = 21

Mean = 3.5

∑(X - Mx)2 = SSx = 17.5

Y Values

∑ = 15

Mean = 2.5

∑(Y - My)2 = SSy = 41.5

X and Y Combined

N = 6

∑(X - Mx)(Y - My) = -18.5

R Calculation

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

r = -18.5 / √((17.5)(41.5)) = -0.6865

Meta Numerics (cross-check)

r = -0.6865

dexar [7]3 years ago
3 0
∑x = 1 + 2 + 3 + 4 + 5 + 6 = 21
∑y = 8 + 3 + 0 + 1 + 2 + 1 = 15
∑x^2 = 1 + 4 + 9 + 16 + 25 + 36 = 91
∑y^2 = 64 + 9 + 0 + 1 + 4 + 1 = 79
∑xy = 8 + 6 + 0 + 4 + 10 + 6 = 34

r = (n∑xy - ∑x∑y)/(sqrt(n∑x^2 - (∑x)^2)*sqrt(n∑y^2 - (∑y)^2)) = (6(34) - 21(15))/(sqrt(6(91) - (21)^2)*sqrt(6(79) - (15)^2)) = (204 - 315)/(sqrt(546 - 441)*sqrt(474 - 225)) = -111/(sqrt(105)*sqrt(249)) = -111/(10.25*15.78) = -111/161.7 = -0.68

You might be interested in
How do you find a frequency of a class when the relative frequency is given
ryzh [129]

Step-by-step explanation:

Remember, you count frequencies. To find the relative frequency, divide the frequency by the total number of data values. To find the cumulative relative frequency, add all of the previous relative frequencies to the relative frequency for the current row.

6 0
3 years ago
Can someone tell me the answer please
weqwewe [10]
How could you example this artist statement( description of this work of this picture ? 3 or 5 complete sentences
8 0
3 years ago
if the weight of a package is multiplied by 5/8 the result is 15 lbs. find the weight of the package.
lara31 [8.8K]
Let the weight be d
x*5/8=15
5x=15*8
5x=120
x=120/5
x=24
8 0
3 years ago
How do you write 30.0 in scientific notation? ____× 10^_____
Pie

Answer:

It's written as

3 \times  {10}^{1}

Hope this helps you

8 0
3 years ago
Read 2 more answers
How to find out the value of the lettered sides
umka2103 [35]

Step-by-step explanation:

  • a

sin 46°= a/12.8

a = sin46° * 12.8 = 9.20

  • b

cos59°=b/16.8

b = cos59°*16.8 = 8.65

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve this please. |x|<13
    6·1 answer
  • HIGH POINTS! AND BRAINLY! PLEASE GIVE GOOD AND GENIUNE ANSWERS OR I WILL DELETE YOUR COMMENT AND TAKE THE POINTS BACK:
    12·2 answers
  • Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approxi
    14·1 answer
  • Solve addition and subtraction word problems using the ruler as a number line
    6·1 answer
  • Which number sentence correctly models this algorithm for 75÷2.5​
    7·1 answer
  • A coin is flipped 10 times. The coin lands on HEADS 7 times. Write the values fraction and percent form.
    7·1 answer
  • Can someone explain to my why sin(90)=1
    13·1 answer
  • <img src="https://tex.z-dn.net/?f=4x%282xy%20%2B%203xy%29%20%2B%205x%283xy%20%2B%202xy%29" id="TexFormula1" title="4x(2xy + 3xy)
    12·1 answer
  • (√229.7​)^2 <br><br> Please help no calculator
    15·2 answers
  • I"LL MAKE YOU BRAINLIEST IF YOU ANSWER IN 2 MINUTES
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!