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
Nataly_w [17]
3 years ago
14

Closing prices of two stocks are recorded for 50 trading days. The sample standard deviation of stock X is 4.665 and the sample

standard deviation of stock Y is 8.427. The sample covariance is 35.826.
Calculate the sample correlation coefficient. (Round your answer to 4 decimal places.)
Correlation coefficient
Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Answer:

0.9113

Step-by-step explanation:

Given :

Sample standard deviation of Stock X = 4.665

Sample standard deviation of Stock Y = 8.427

Sample Covariance = 35.826

The Correlation Coefficient, R is related to sample covariance and standard deviation using the formular :

R = Covariance(X, Y) / (SD(X) * (SD(Y))

R = 35.826 / (4.665 * 8.427)

R = 35.826 / 39.311955

R = 0.9113

Hence, correlation Coefficient, R = 0.9113 which depicts a strong positive relationship.

You might be interested in
I made 12 dog treats using 1 cup of peanut butter. If I want to make 36 dog treats, how much peanut butter will I need? Write a
MaRussiya [10]

Answer:

You will need 3 cups peanut butter to  make 36 dogs treats.

Peanut butter Cup  :  The dog treats made =  1: 12

Step-by-step explanation:

12 dog treats  = 1 cup  

So, by UNITARY METHOD

1 dog treat = (1/12) cup

So, 36 dog treats = 36 x (1/12) cup = 3 cups

So, you will need 3 cups peanut butter to  make 36 dogs treats.

If 1 cup = 12 Dog Treats

then 1 x 3 cup = 12 x 3 dog treats

or, 3 Cups = 36 dog treats

The ratio of the Peanut butter cup  :  The dog treats made =  1: 12

6 0
3 years ago
Phoebe wants to get atleast a grade of 90 in the math class. Her grade will be the average of two tests. She scored a 94 on the
marin [14]
First things first, you will have 94 + x. Place those on top of a fraction bar and on the bottom put the two numbers over 2. So you have 94 + x over 2. Then, write the symbol ‘greater than or equal to’ and on the other side place your 90. So, 90 + x over 2 is greater than or equal to 90. This is a difficult thing to write out and explain so I hope this makes sense. :)
7 0
3 years ago
Read 2 more answers
Which is the graph of f(x) = -3_/x?
Delicious77 [7]

Answer:

6

Step-by-step explanation:

sorry if  it wrong

6 0
3 years ago
find each unit rate round to the nearest hundredth if necessary on a hundred and $140 for 18 ft squared
Marina86 [1]
Divide both by 18. 
<span>140/18=7.78 </span>

<span>So... $7.78 per foot</span>
4 0
3 years ago
If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation?
laila [671]
If you multiply 12 by 0.1, you get 1.2.   To write this as a function you would say y is x multiplied by 0.1.
y=0.1x
6 0
3 years ago
Read 2 more answers
Other questions:
  • A box contains 146 marbles which are either red or blue. there are 28 more blue marbles than red marbles. how many blue marbles
    8·1 answer
  • How many unit cubes are in the bottom layer of this prism?
    6·2 answers
  • Find vector c if c=a+b (view image)<br> A. 7,6<br> B. -7,2<br> C. 0,-5<br> D. -5, 0
    11·1 answer
  • Resuelve los siguientes sistemas de ecuaciones con dos incógnitas
    10·1 answer
  • To take advantage of the power of compounding, what should you do with the money an investment produces?
    8·2 answers
  • The point C is 3/4 of the way from point A (-4,1) to point B (6,5). What are the coordinates of point C?
    14·1 answer
  • How are u alive plss hlp<br><br> .
    7·1 answer
  • James and Padma are on opposite sides of a 100-ft-wide canyon. James sees a bear at an angle of depression of 45 degrees. Padma
    11·1 answer
  • This is going to be my 13th reason please help me
    8·1 answer
  • The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is r
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!