Gender Month of Birth Sem. Hours TV (min) Year of Birth Eye Color Study (hrs) Si
ID: 3297950 • Letter: G
Question
Gender
Month of Birth
Sem. Hours
TV (min)
Year of Birth
Eye Color
Study
(hrs)
Siblings
Dog/Cat Person
Confidence
Level
M
July
15
0
1997
Blue
3
2
Dog
10
M
August
17
0
1998
Brown
3
2
Dog
4
M
February
15
0
1990
Hazel
2
3
Dog
7
F
January
17
0
1998
Blue
0
1
Dog
10
M
February
15
240
1998
Brown
22.5
0
Dog
10
M
June
15
60
1998
Brown
2
1
Dog
10
F
July
13
0
1996
Blue
1
6
Dog
7
F
May
15
120
1998
Brown
1
5
Both
7
M
July
9
30
1993
Brown
2
0
Dog
10
M
September
13
15
1975
Brown
3.5
1
Neither
9
F
July
15
0
1998
Brown
1
4
Both
7
F
November
16
0
1997
Hazel
0.5
0
Both
8.5
F
December
15
120
1993
Brown
2.5
2
Cat
7
F
August
16
0
1998
Blue
2
7
Dog
9
M
February
15
120
1998
Green
4
2
Dog
9
M
August
17
5
1997
Blue
1
2
Both
9
M
June
15
0
1993
Brown
2
4
Dog
10
M
July
7
66
1989
Blue
1
1
Dog
8.75
M
February
14
80
1995
Brown
1
13
Dog
9.5
M
May
12
180
1995
Brown
2
2
Dog
8
M
March
12
0
1996
Green
2
5
Dog
10
M
November
13
45
1982
Brown
4
3
Dog
10
4. (a) Create a stem-and-leaf plot for the column Year of Birth and draw the graph below. Be sure to include a legend or key.
(b) What decade(s) had the most birth years?
(c) What decade(s) had the least birth years?
Gender
Month of Birth
Sem. Hours
TV (min)
Year of Birth
Eye Color
Study
(hrs)
Siblings
Dog/Cat Person
Confidence
Level
M
July
15
0
1997
Blue
3
2
Dog
10
M
August
17
0
1998
Brown
3
2
Dog
4
M
February
15
0
1990
Hazel
2
3
Dog
7
F
January
17
0
1998
Blue
0
1
Dog
10
M
February
15
240
1998
Brown
22.5
0
Dog
10
M
June
15
60
1998
Brown
2
1
Dog
10
F
July
13
0
1996
Blue
1
6
Dog
7
F
May
15
120
1998
Brown
1
5
Both
7
M
July
9
30
1993
Brown
2
0
Dog
10
M
September
13
15
1975
Brown
3.5
1
Neither
9
F
July
15
0
1998
Brown
1
4
Both
7
F
November
16
0
1997
Hazel
0.5
0
Both
8.5
F
December
15
120
1993
Brown
2.5
2
Cat
7
F
August
16
0
1998
Blue
2
7
Dog
9
M
February
15
120
1998
Green
4
2
Dog
9
M
August
17
5
1997
Blue
1
2
Both
9
M
June
15
0
1993
Brown
2
4
Dog
10
M
July
7
66
1989
Blue
1
1
Dog
8.75
M
February
14
80
1995
Brown
1
13
Dog
9.5
M
May
12
180
1995
Brown
2
2
Dog
8
M
March
12
0
1996
Green
2
5
Dog
10
M
November
13
45
1982
Brown
4
3
Dog
10
Explanation / Answer
a) Stem and leaf diagram:
Stem-and-Leaf Display: year of birth
Stem-and-leaf of year of birth N = 22
Leaf Unit = 0.10
1 1975 0
1 1976
1 1977
1 1978
1 1979
1 1980
1 1981
2 1982 0
2 1983
2 1984
2 1985
2 1986
2 1987
2 1988
3 1989 0
4 1990 0
4 1991
4 1992
7 1993 000
7 1994
9 1995 00
11 1996 00
14 1997 000
22 1998 00000000
From the diagram of stem and leaf we can see that the extreme left column is the cumulative frequency(greater than type),whereas the middle column is the year of births and the last column is the frequency for each of the years. The diagram is such that corresponding to the individual years we have the frequencies which looks like an inverted column diagram.
b)From the stem and leaf diagram we can see that the year 1998 has the most no of births. ie no is 8.
c)And the years 1975 1982 1989 1990 have the least no of births i.e all with frequency 1.
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