Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. Find out the the unit of measurement of variance for the following data?

$110

$200

$190

$175

$120

$120

$190

$100

$180

$100

$170

$145

$95

$185

$100

$210

$135

$195

$240

$120

a. Dollars

b. Dollars squared

c. The variance doesn't have a unit of measurement.

d. Cannot say

2. The covariance between X and Y is 10.  The standard deviation of X is 2.  The standard deviation of Y is 5.  Find out the correlation coefficient between X and Y?

a. 25

b. 0.25

c. 1

d. 0

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920399

Have any Question? 


Related Questions in Statistics and Probability

Let x0 x1 x2nbspbe three vectors in rn prove that these

Let x 0 , x 1 , x 2  be three vectors in R n . Prove that these vectors are affine independent if and only if none of them is a convex combination of the other two.

What is the difference between dependent and independent

What is the difference between dependent and independent variables? On which side of the regression equation does each lie? Describe how Doane's rule relates to the number of allowed independent variables.  Why is this i ...

Designing and writing a report on a statistical study of

Designing and Writing a Report on a Statistical Study of Your Own Select a question of your own to investigate using one of the hypothesis tests studied in this class.  Explain why you chose the particular question to in ...

A jury composed of seven members is called upon to find an

A jury composed of seven members is called upon to find an accused individual either guilty or innocent. Debbie is the jury forewoman, with Bobby and Jack appointed vice-foremen. The jury includes four more jurors, in ad ...

Research objectives to explore correlations between reward

Research Objectives To explore correlations between reward systems and team work attributes in the Saudi Arabian bank sector To explore relationships between reward systems and team work effectiveness in the Saudi Arabia ...

Consider the approximately normal population of heights of

Consider the approximately normal population of heights of male college students with mean μ = 68 inches and standard deviation of σ = 4.6 inches. A random sample of 16 heights is obtained. (a) Describe the distribution ...

Suppose we would like to determine if the typical amount

Suppose we would like to determine if the typical amount spent per customer for dinner at a new restaurant in town is more than $20.00. A sample of 49 customers over a three-week period was randomly selected and the aver ...

1 what can researchers do to minimize error variance2

1. What can researchers do to minimize error variance? 2. Discuss the trade-off between internal and external validity. Which is more important? Explain.

Produce an spss output for an independent- samples t-test

Produce an SPSS output for an independent- samples t-test comparing male and female scores on self-esteem. a.) what are the null and alternative hypothesis? b.) What is the value of Cohen's d? Report in APA format. c.) W ...

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 ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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