User Account

All Pages

Compute the sample covariance

Assignment Help Basic Statistics
Reference no: EM132372776

1. The following is a set of data from a sample of n=11 items. Complete parts? (a) through left parenthesis (c).

X 57 42 36 18 48 30 60 45 6 24 30

Y 19 14 12 6 16 10 20 15 2 8 10

a. Compute the sample covariance. ?(Round to three decimal places as? needed.)

b. Compute the coefficient of correlation. (Do not round until the final answer. Then round to three decimal places as? needed.)

c. How strong is the relationship between X and? Y? Explain.

A. X and Y have no correlation.

B. X and Y have a strong positive correlation because as X? increases, Y tends to increase also.

C. X and Y have a perfect negative correlation because all points fall on a straight line with a negative slope.

D. X and Y have a perfect positive correlation because all points fall on a straight line with a positive slope.

Reference no: EM132372776

Questions Cloud

What score must an applicant make to be interviewed : The results of the test are normally distributed with a mean score of 124 and a standard deviation of 16. If only the top 75% of the applicants
Calculate the mean and standard deviation : Calculate the mean and standard deviation of the market capitalization for this population of 20 companies.
What is the probability that the sum of the upward facing : What is the probability that the sum of the upward facing sides of both dice is equal to two?
Yields for a money market? account : The data table shows the yields for a money market? account, a? one-year certificate of deposit? (CD), and a? five-year CD for 13 banks.
Compute the sample covariance : The following is a set of data from a sample of n=11 items. Complete parts? (a) through left parenthesis (c).
Compute the sample covariance : The following data contains? coaches' salaries and team revenues? (in millions of? dollars) for ten college basketball teams. Use this data to complete parts?
Gross receipts of individual movies : 1. Movie companies need to predict the gross receipts of individual movies after a movie has debuted.
What is the probability that a visit to a pcp : What is the probability that a visit to a PCP's office results in lab work or referral to a specialist?
Compute the first quartile : The data below describe the fat? content, in grams per? serving, for a sample of 20 chicken sandwiches from? fast-food chains.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd