Practice at home
The following data belong to the ages of people who have been to
the Medical Lab for blood tests. Elaborate the frequency
distribution table.
26 – 9 – 16 – 28 – 6 – 24 – 12 – 15 – 8 – 28 – 11 – 7 – 20 – 10 – 15 – 6 – 20 – 9
– 24 – 14 – 28 – 8 – 14 – 22 – 8 – 20 – 26 – 15 – 16 – 12
6 – 6 – 7 – 8 – 8 – 8 – 9 – 9 – 10 – 11 – 12 – 12 – 14 – 14 – 15 – 15 – 15- 16 –
16 – 20 – 20 – 20 – 22 – 24 – 24 – 26 – 26 – 28 – 28 – 28
6 – 7 – 8 – 9 – 10 – 11 – 12 – 13 – 14 – 15 – 16 – 17 – 18 – 19 – 20 – 21 – 22 –
23 – 24 – 25 – 26 – 27 – 28
Number of data (N)=30
Class(K)=1+3.322 log(30 )=5.91=6
Rank
(
R
)
=Vmax−Vmin=28 –6=22
Amplitude(R
K)= R
K=22
6=3.66=4
Ordin
al
Class Mark
of
Class
Absolut
e
Frequen
cy
Relative
Frequen
cy
Accumula
ted
Absolute
Frequenc
y
Accumula
ted
Relative
Frequenc
y
1 [6, 10) 8 8 0,27 8 0,27
2 [10,
14)
12 4 0,13 12 0,40
3 [14,
18)
16 7 0,23 19 0,63
4 [18,
22)
20 3 0,10 22 0,73
5 [22,
26)
24 3 0,10 25 0,83
6 [26,
28]
27 5 0,17 30 1,00
30 1,00
