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Module 1: Summarising data

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XSIQ
*

Chance visible:hide; z-index:100;" id="overDiv"

Range of data

The average age of women at the time of marriage over the last fifty years
can be collected from census data.

CENSUS YEAR
WOMEN

1947
23

1954
22.6

1961
21.8

1966
21.5

1971
21.4

1976
22.2

1981
23.3

1986
24.9

1991
26

1996
27.2

The table shows that the highest age at which women married over the past
50 years was 27.2 years during 1986. The lowest age which women married at
was 21.4 years during 1971. It can be said therefore that the range between
the lowest and the highest average age was aproximately 6 years - 5.8 years
to be exact.

One indicator of the spread of data is given by the range - the gap
between the lowest and the highest values.

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