Table:
mother
father

stay-at-home
single-earner
dual-earner
stay-at-home
single-earner
dual-earner

average

average age
36.6
39.4
38.3
43.2
39.6
40.7

average number of children under 16
2.0
1.7
1.7
1.7
2.0
1.7

percentage

more than two children under 16
25.4
13.3
13.3
13.3
25.4
13.3

at least one child under 5 at home
57.7
36.1
42.6
36.1
57.7
42.5

all children aged 5 to 15
42.4
63.9
57.4
63.9
42.4
57.5

education

less than high school
11.9
6.0
3.3
13.7
11.4
6.1

high school diploma
29.1
21.5
16.6
30.8
21.5
20.8

college/trades diploma or certificate
29.3
34.3
38.3
28.6
33.3
39.8

university degree
29.7
38.2
41.9
27.0
33.8
33.4

worked last year
17.1
.
.
35.8
.
.

occupation

management
4.9
7.1
7.1
f
12.0
12.6

business, finance and administration
22.6
20.2
25.6
f
9.8
10.3

natural and applied sciences
2.6
3.3
4.4
f
13.6
14.0

health
5.6
14.5
14.6
f
2.4
3.3

social science, education, government and religion
15.2
18.4
19.7
f
4.2
6.2

art, culture, recreation and sport
4.3
4.9
3.8
f
1.7
2.2

sales and service
36.3
25.6
19.7
17.0
12.9
14.9

trades, transport and equipment operators
2.9
f
1.7
37.9
29.5
26.0

primary industry
2.4
f
1.1
12.6
6.9
4.0

processing, manufacturing and utilities
3.4
3.4
2.4
f
6.4
6.6

sector

public
21.0
29.9
32.6
11.2
11.0
17.5

private
70.0
58.1
53.6
79.3
67.9
62.6

self-employed
9.0
11.6
13.9
9.9
20.7
19.9

average

average usual weekly hours
.
35.7
34.4
.
41.6
40.5

average hourly earnings
.
25.22
26.10
.
30.36
30.76

average weekly earnings
.
908.34
897.95
.
1,249.68
1,225.58

Statement: stay-at-home mothers were slightly younger on average than both single-earner mothers and mothers who were part of a dual-earner couple.
Question: who were the youngest on average,stay-at-home mothers or single-earner mothers or mothers who were part of a dual-earner couple?
Answer: stay-at-home