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Frequency Histograms and Polygons By Daniel Hyde. CONSTRUCTING GRAPHS. FDT. A Frequency Distribution Table (FDT) is used to organise raw data. A pair of dice was rolled 50 times and the sum recorded. Construct a frequency distribution table. Skip Process. Score. Tally. Frequency. 12. 2.
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Frequency Histograms and Polygons By Daniel Hyde
CONSTRUCTING GRAPHS FDT A Frequency Distribution Table (FDT) is used to organise raw data. A pair of dice was rolled 50 times and the sum recorded. Construct a frequency distribution table. Skip Process
Score Tally Frequency 12 2 2 11 3 2 10 4 4 9 5 4 8 Frequency 7 6 4 6 7 11 5 8 9 4 9 8 3 10 4 2 11 1 1 12 1 2 3 4 5 6 7 8 9 10 11 12 Total 50 Sum of Dice CONSTRUCTING GRAPHS FrequencyHistogram Construct a frequency histogram to illustrate the data. Rolling Dice
Heading Rolling Dice 12 Appropriate labelling of axes 11 10 No gaps between columns Frequency 9 8 7 Labels 6 Columns all the same width 5 4 3 Half column gap here 2 1 Labels 2 3 4 5 6 7 8 9 10 11 12 Sum of Dice CONSTRUCTING GRAPHS Histogram Features Features of a Frequency Histogram
This is usually drawn on top of a Frequency Histogram Rolling Dice 12 Place a dot at the top of each column (in the centre) 11 10 9 8 Frequency 7 6 5 4 Now join each dot starting at the ‘origin’ 3 This line should join the x-axis at the next marker 2 1 2 3 4 5 6 7 8 9 10 11 12 Sum of Dice CONSTRUCTING GRAPHS Frequency Polygon Construct a frequency polygon to illustrate the data.
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