Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Choose the correct answers in measure of dispersion.

1. What is a disadvantage of the range as a calculation of dispersion?

a. Based on only two observations.

b. Can be distorted by a large mean.

c. Not in the same units as the original data.

d. Has no disadvantage

e. None of the above

 

2. Rank the measures of dispersion in terms of their relative computational difficulty from least to most difficult.

a. Mode, median, mean

b. Range, mean deviation, standard deviation

c. Variance, mean, deviation, range

d. There is no difference

 

3. Which of the following measures of dispersion are based on deviations from the mean?

a. Variance

b. Standard deviation

c. Mean deviation

d. All of the above

e. None of the above

 

4. What is the relationship between the variance and the standard deviation?

Variance is the square root of the standard deviation

i. Variance is the square of the standard deviation

ii. Variance is twice the standard of deviation

iii. No constant relationship between the variance and the standard deviation

iv. None of the above

 

5. What is the range for the sample of March electric bills amounts for all electric homes of similar sizes (to the nearest dollar):

 $212, $191, $176, $129, $106, $92, $108, $109, $103, $121, $175 and $194.

 

i. $100

ii. $130

iii. $120

iv. $112

v. None of the above

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920876

Have any Question? 


Related Questions in Statistics and Probability

Assume that you want to construct a 95 confidence interval

Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample st ...

Question 1interpret the following output examining group

Question 1 Interpret the following output examining group differences for purchase intentions. The three groups refer to consumers from the states of Illinois, Louisiana and Texas Dependent variable int 2 Source Type III ...

1 use your own random mu sigma to generate four sets of

1) Use your own random (μ, σ) to generate four sets of (normal-distribution based) random numbers (i.e., samples) of sizes n = 5, 20, 80, and 320, respectively. 2) Calculate the means and standard deviations for the 4 sa ...

A drug company wants to analyze if its new marketing

A drug company wants to analyze if its new marketing strategy adopted last year is successful is increasing sales. It randomly chooses 49 drugs from its list of products. For each drug, it computes the sales (in million ...

The western way of war thesis posits that western societies

The Western Way of War thesis posits that western societies throughout history have generally fought wars in fundamentally similar ways. The precise elements of the Western Way of War are described succinctly in Geoffrey ...

Anbsppsychologist would like to examine the effects of a

A psychologist would like to examine the effects of a new drug on the activity level of animals. Three samples of rats are selected with n = 5 in each sample. The rats in the first sample serve as a control and do not ge ...

A clinical trial is being planned to investigate the effect

A clinical trial is being planned to investigate the effect of a new experimental drug designed to reduce total serum cholesterol. Investigators will enroll participants with total cholesterol levels between 200-240, the ...

1 what does the reliability coefficient of a measure

1. What does the reliability coefficient of a measure indicate if it is .60? .OO? 1.00? 2. What does a correlation coefficient tell us? Why are correlation coefficients useful when assessing reliability? 3. What are the ...

Assume that the number of pieces of junk mail per day that

Assume that the number of pieces of junk mail per day that a person receives in their mail box follows the Poisson distribution and averages 3.5 pieces per day. What is the probability that this person will receive exact ...

Risk taking is an important part of investing in order to

Risk taking is an important part of investing. In order to make suitable investment decisions on behalf of their customers, portfolio managers give a questionnaire to new customers to measure their desire to take financi ...

  • 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