Explain why the main component analysis is an appropriate choice to extract the main factors.

statistics

Description

Sol

P3 - four main themes: demographics, employment, local direct taxation, crime.

to identify each department, the following variables are completed: Department Number, Department Name, Department Prefecture, Region.

a)      Explain why the main component analysis is an appropriate choice to extract the main factors. (2 points)

 

Ans-

Coefficientsa

Model

Unstandardized Coefficients

Standardized Coefficients

t

Sig.

B

Std. Error

Beta

1

(Constant)

83.028

20.783

 

3.995

.000

fisc

-.012

.007

-.228

-1.778

.079

chom

-202.397

119.606

-.180

-1.692

.094

crim

-.053

.212

-.041

-.251

.803

Urbr

61.073

17.250

.513

3.540

.001

a. Dependent Variable: Département#

 

From this we can see there is a lot of difference in the intercepts or we can interprete these as difference in mean also.

 

b)      Perform the analysis as a main component. How many factors (or components) do you remember? What percentage of the database is represented by the factors selected[CLD1] . (3 points))

 

Ans-

Statistiques

 

Txcr

etra

Urbr

jeun

age

chom

agri

arti

cadre

employ

ouvrier

prof

fisc

crim

fe90

Département#

 

N

Valid

95

95

95

95

95

95

95

95

95

95

95

95

95

95

95

95

 

Missing

190

190

190

190

190

190

190

190

190

190

190

190

190

190

190


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