Section outline

  • PLAN & DO / WHAKAMAHI

    PLAN & DO / WHAKAMAHI learning intentions:

    • We are PLANNING to learn how statistics are used in geography so that we can practise mean, median and mode when analysing data.


    Geographers use numbers and data to interpret   patterns and trends in what they are studying.

    Geographers want to find the average within this data. We do this by finding the following:

    Mean

    Median 

    Mode 


    We also always put numbers in order from smallest to biggest



     

    ADVANTAGES

    DISADVANTAGES


    ALLOWS FEATURES OF DISTRIBUTION TO BE SHOWN


    GOOD VISUAL REPRESENTATION





    LACKS PRECISION OF LOCATIONS


    TOO MANY DOTS COULD MERGE SO UNCLEAR 


    AREAS COULD BE MISSED OUT IF THEY DO NOT CONFORM TO THE SCALE


    ONLY INDICATE GENERAL VARIATIONS BETWEEN AREAS


    difficulty of counting large numbers of dots in order to get a precise value 


    Need a large amount of information to draw a map




     

    ADVANTAGES

    DISADVANTAGES


    VISUAL

    SHOW PATTERNS CLEARLY






    DOES NOT SHOW VARIATION WITHIN AN AREA


    GIVE IMPRESSION THAT DENSITY CHANGES ABRUPTLY BETWEEN AREAS. IN REALITY CHANGES WOULD BE GRADUAL


    CAN BE DIFFICULT TO SEE SHADING


    SMALL VARIATIONS MAY BE HIDDEN




     

    ADVANTAGES

    DISADVANTAGES

    No artificial boundaries so changes occur with a smooth line not an abrupt one


    Can interpret general trends easily


    Visually good



    Not suitable for showing discontinuous data


    Large amount of data needed