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Session 4: Handling data

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The bar chart shows the following average house price by local authority in 2017 (blue bar) and 2018 (orange bar):

Cardiff – £200 082 (orange), £190 244 (blue)

Ceredigion – £179 419 (orange), £170 682 (blue)

Flintshire – £167 673 (orange), £158 629 (blue)

Gwynedd – £148 891 (orange), £145 362 (blue)

Isle of Anglesey – £178 247 (orange), £157 541 (blue)

Pembrokeshire – £166 374 (orange), £163 386 (blue)

Powys – £179 789 (orange), £172 568 (blue)

Swansea – £142 592 (orange), £138 422 (blue)