Computer exercise.

The following data comes from an old survey from Credoc. 1000 people gave their opinion on the following four subjects:
1. Preservation of the environment is ...
2. Do scientific discoveries improve our lives?
3. How the justice system works
4. Does French society need to undergo change?

In addition, the following four benchmark questions were answered: 5. Sex
6. Highest attained education level
7. Profession
8. Age

This data can be obtained here.

First, we are going to look at variations in opinion. Next, we will connect the axes of this variation with the social reference points. This means running MCA on the data.

Q1) What is the value of the first eigenvalue of the MCA?
0.1
0.357
999
7

Q2) Which qualitative variable is the most associated with the 1st axis?
Preserving environment
Scientific discoveries
Justice system
French society need to undergo change
Sex
Education level
Profession
Age

Q3) With which axis is the age variable most associated?
1
2
3
4

Q4) Which category contributes the most to the 2nd axis?
Male
Femal
4
"no opinion" for question 4 (French society need to undergo change)
university

Q5) We are interested in whether the "Socio occupational category" variable is associated with the 1st axis. Give the p-value which helps us to answer this (number between 0 and 1 with 4 decimal places).
0.01868
0.214
0.845
0.95
0.9182

Score =
Correct answers: