Macmillan Learning NASA s Goddard Institute for Space Studies GISS allows you to download historical temperature records for locations worldwide Go to http data giss nasa gov gistemp station data scroll down to Download Station Data and type Los Angeles You may be interested in looking up your own location as well A new page appears with a link to the Los Angeles California station data Click on this link to the next page which should contain a time plot of the annual mean temperature in degrees Celsius for Los Angeles since 1880 and a link to Download monthly data as text If this URL isn t working you can access the data set using one of the links provided To access the complete data set click the link for your preferred software format Excel Minitab14 18 Minitab18 JMP SPSS TI R Mac TXT PC TXT CSV CrunchIt Now clean up the data so that only true temperature values will be plotted You can do this by editing either the original text file or the data in your statistical software Take the time to consider how your specific software handles missing data if an empy cell won t work see your software s help function Create both a dotplot and a time plot of the cleaned up annual mean temperatures Interpret your graphs and conclude in context The time plot reveals in Los Angeles from 1 regular irregular up and down cycles with he dotplot reveals that the Y an overall decrease a relatively flat change an overall increase in annual mean temperatures mperatures is