Question

Vehicle   Horsepower   Gas Mileage A 310 10 B 285   13 C 127   29 D 194   21...

Vehicle   Horsepower   Gas Mileage
A 310 10
B 285   13
C 127   29
D 194   21
E 205   20
F 190   15
G   210   23
H   170   22

Find the correlation between horsepower and miles per gallon. equals r=

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution:

Given that,

X Y XY X^2 Y^2
310 10 3100 96100 100
285 13 3705 81225 169
127 29 3683 16129 841
194 21 4074 37636 441
205 20 4100 42025 400
190 15 2850 36100 225
210 23 4830 44100 529
170 22 3740 28900 484

n 8
sum(XY) 30082.00
sum(X) 1691.00
sum(Y) 153.00
sum(X^2) 382215.00
sum(Y^2) 3189.00
Numerator -18067.00
Denominator 20418.05
r -0.8849
r square 0.7830
Xbar(mean) 211.3750
Ybar(mean) 19.1250
SD(X) 61.5921
SD(Y) 6.2183
b -0.0911
a 38.3892

Correlation coefficient r = -0.8849

The correlation between horsepower and miles per gallon. r = -8849.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A loan made on March 14 is due September 13 of the following year. Find the...
A loan made on March 14 is due September 13 of the following year. Find the exact time for the loan in a​ non-leap year and a leap year. days. The exact time in a​ non-leap year is ? days The exact time in a leap year is ? days. Data Table Sequential Numbers for Dates of the Year Day of Month Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 1 1 32 60 91 121...
I am making a game like Rock Paper Scissors called fire water stick where the rules...
I am making a game like Rock Paper Scissors called fire water stick where the rules are Stick beats Water by floating on top of it Water beats Fire by putting it out Fire beats Stick by burning it The TODOS are as follows: TODO 1: Declare the instance variables of the class. Instance variables are private variables that keep the state of the game. The recommended instance variables are: 1. 2. 3. 4. 5. 6. A variable, “rand” that...
Bivariate Data & Probability After completing the calculation by hand in Q1 you can use Excel...
Bivariate Data & Probability After completing the calculation by hand in Q1 you can use Excel to check your answers before submitting. Q2 assesses your general understanding of probability and linear associations using Excel to analyse a large dataset. Question 1       Covariance and Correlation The table below shows a set of sample bivariate data. Calculate the covariance and correlation coefficient by completing the below table. Show all working. X Y (X - ) (Y - ) (X - )(Y -...
Researchers in a 2015 study by Flannery et al. sought to estimate the effectiveness of the...
Researchers in a 2015 study by Flannery et al. sought to estimate the effectiveness of the seasonal influenza vaccine in preventing acute respiratory infection (ARI). A total of 507 subjects from Texas who showed symptoms of ARI were recruited for this study. The data provided show the result of each subject's test for influenza. Click to download the data in your preferred format.    CrunchIt!    CSV    Excel    JMP    Mac-Text    Minitab    PC-Text    R   ...
Your firm works in construction and buys ASTM A325M8S bolts in very large numbers. You are...
Your firm works in construction and buys ASTM A325M8S bolts in very large numbers. You are interested in purchasing bolts from different suppliers and have obtained and tested samples of 200 bolts from three suppliers: Allnutt, Boltzman, Coachers.You have tested these in your new bolt testing machine, purchased after you had discovered your old bolt testing machine was performing erratically. (For the purposes of this question, you are safe to assume that the new machine works perfectly and that its...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT