What are the means and standard deviations

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Reference no: EM13736887

Question 1

Ventura

County

Males

430360

Females

401605

How large a sample that is proportional to the number of males and females in Ventura County, CA is required if you want to be 95% confident that the sample is representative of the population?

Question 2

Ventura

County

Married

210904

Suppose that you also know the number of males and females that are married in Ventura County, CA.

Ventura County

   

Married

Not Married

Males

430360

210904

 

Females

401605

210904

 

How large a sample that is proportionate to the number of married males and females in Ventura County, CA is required if you want to be 95% confident that the sample is representative of the population? Note that you have to assume that the Males in the County are married to the Females in that county.

Question 3

Selected Economic Characteristics - Ventura County, CA: 2002

Total Population

770,658

     

Households

251,037

     

Household Size

Mean

3.07

Deviation

0.016

Household income (dollars)

Mean

75,748

Deviation

1524

How large a sample that will yield an average household size of 3.07 for Ventura County, CA is required if you want to be 95% confident that the sample is representative of the population?

Question 4

How large a sample that will yield an average household income of $75, 748 for Ventura County, CA is required if you want to be 95% confident that the sample is representative of the population?

Question 5

 

Bush

Gore

Florida Votes Cast

2912790

291253

If you wanted to predict the 2004 Florida Presidential election, how large a sample would you have needed required if you want to be 95% confident that the sample is representative of the population?


Column

Variable

Variable Type:

Nominal

Ordinal

or

Interval

A

Household Identification Number 1-60

 

B

Weekly food expenditure, actual, e.g., 34.50

 

C

Number of persons in household, coded in nine categories

 

D

Annual income of household, actual, e.g., $10,000

 

E

Age of head of household, actual, e.g., 38

 

F

Education of head of household, coded in seven categories

 

G

Any children under 6 years in household, coded into two categories

 

H

Any children 6-18 years in household, coded into two categories

 

I

Annual income of household, coded in six categories

 

J

Age of head of household, coded into seven categories, 1-7

 

Assume that Sheet 1 shows census data. Your task is to describe that population. Nominal, ordinal, and interval variables have been included so that you will get a chance to work with nominal, ordinal, and interval variables.

Question 6

Including all three columns, Copy/Paste NominalOrdinalInterval.doc into your framework for your answer to CASE2, Question 6. In that copied/pasted table, input the word that appropriately describes each of the MKT403-HouseholdData.xls A-J variables as nominal (dichotomous), ordinal or interval.

Question 7

For variables B, D, and E in MKT403-HouseholdData.xls; what are the means and standard deviations? Why is the mean an inappropriate parameter for describing variables C, F, G, H, I and J?

Question 8

Tabulate variables C, F, G, H, I, and J in MKT403-HouseholdData.xls and present the resul­tant absolute frequency, cumulative frequency, and absolutive and cumu­lative percentage distributions.

Question 9

How large a sample will yield the average household income of the population described by Variable D in MKT403-Data.xls?
Question 10

How large a sample will yield the income distribution of the population described by Variable I in MKT403-HouseholdData.xls?

Reference no: EM13736887

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