GCSE Statistics Cumulative Frequency Step Polygons

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					 GCSE Statistics: Cumulative Frequency Step Polygons
                            Comparing Household Size in 1961 and 2001

                 Household size               1961          Cumulative frequency
                                        (% of households)
                        1                        14

                        2                        30

                        3                        23

                        4                        18

                        5                        9

                        6                        5

                        7                        2


In 1961,
       The median household size is …
       The lower quartile household size is …
       The upper quartile household size is …
       The 90th percentile household size is …


                 Household size               2001          Cumulative frequency
                                        (% of households)
                        1                        29

                        2                        35

                        3                        16

                        4                        14

                        5                        5

                        6                        1

                        7                        1


In 2001,
       The median household size is …
       The lower quartile household size is …
       The upper quartile household size is …
       The 90th percentile household size is …



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