Using R Commander, calculate the first: second: and third: quartiles for plaque index scores. Present each number to TWO decimal places.

QUESTION 2
In a study of the oral home care practice and reasons for seeking dental care among individuals with angina, a researcher studied 30 subjects with angina. The oral hygiene status of all subjects was examined using plaque index scores that range from 0 to 3. Variables are Pindex: plaque index score; Gender: M=Male, F=Female. The data are available in the file, PlaqueIndexScore2.csv, and are as follows:
Pindex Gender Angina
1.17 M 1
2.50 M 2
2.33 M 3
1.67 M 1
1.33 M 2
2.17 M 3
2.40 M 1
1.5 M 2
2.5 M 3
1.67 M 1
1.5 M 2
1.5 M 3
1.5 M 1
1.33 M 2
2.77 M 3
2.17 F 1
0.90 F 2
1.67 F 3
0.33 F 1
2.67 F 2
0.5 F 3
0.83 F 1
0.33 F 2
1 F 3
0.83 F 1
0.43 F 2
1.17 F 3
1.67 F 1
1.17 F 2
2.60 F 3
Using R Commander, calculate the
first:
second:
and third:
quartiles for plaque index scores. Present each number to TWO decimal places.