Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1:

a) Given n = 10, σ x = 4.5, σ y = 3.6 and sum of the product of deviation from the mean of X and Y is 64 find the correlation co-efficient.
 
b) Given that X = 4y + 5 and Y = kx + 4 are the lines of regression of X on Y and Y on X respectives show that 0 < 4k < 1. If K = 1, find the means of the two variables and coefficient of correlation between them.
 
problem 2:

a) Find Karl pearson’s correlation co-efficient for the following paired data.

1717_karl pearsons coefficient.jpg

b) Obtain the regression equation of y on x from the following data:

159_regression.jpg

problem 3:

a) If θ is the angle between two regression lines and S.D of Y is twice the S.D of X and r = 0.25, find tan θ?
 
b) Show that the maximum value of the rank correlation coefficient is 1.
 
problem 4: Find out rank correlation co-efficient for the following paired data, which gives the Marks of 10 students in mathematics and statistics.

850_corelation coefficient.jpg

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M93274
  • Price:- $30

Priced at Now at $30, Verified Solution

Have any Question? 


Related Questions in Statistics and Probability

1 in a pulse rate research a simple random sample of 120

1. In a pulse rate research, a simple random sample of 120 men results in a mean of 80 beats per minute, and a standard deviation of 11 beats per minute. Based on the sample results, the researcher concludes that the pul ...

1 how might you find information about measures that have

1. How might you find information about measures that have been developed by ofllerresearchers? 2. What are diary mefllodologies, and why are flley used? 3. Discuss ways in which interviewers can increase flle reliabilit ...

An economist wants to estimate the mean per capita income

An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is $23.8, and the standard deviation is known to be $8.9. How large of a sam ...

1 a producer specifies that the mean lifetime of a certain

1. A producer specifies that the mean lifetime of a certain type of battery is at least 240 hours. A sample of 18 such batteries yielded the following data. 237             242             232 242             248         ...

Suppose amongst all the families on a caribbean cruise the

Suppose amongst all the families on a Caribbean Cruise, the population variance of the number of children per family is 4. If we were to take a sample of 10 families, then the probability is .9 that the sample variance i ...

1 distinguish between a quota sample and a purposive

1. Distinguish between a quota sample and a purposive sample. 2. What three criteria characterize good descriptions of data?

Assignmentstatistical analysisdirections be sure to save an

ASSIGNMENT Statistical Analysis Directions: Be sure to save an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to us ...

125 wordshow did the theodore d weld william lloyd garrison

125 words How did the Theodore D. Weld, William Lloyd Garrison, Arthur and Lewis Tappan, and Elizur Wright, Jr assist in the freeing of or ending of slaves/slavery?

What is the difference between inter participant and intra

What is the difference between inter participant and intra participant variance? Which of these types of variance is more closely related to error variance in group experimental designs? Which type is of primary interest ...

Consider the following game a fair die is rolled if the

Consider the following game. A fair die is rolled. If the outcome is 4, then the game ends and you win 0. If the outcome is not 4, then you have the option of either stopping the game and receiving an amount equal to tha ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen