VISUAL - FREQ DISTR of Quantative

VISUAL - FREQ DISTR of Quantative

1. Techniques to describe QUANTITATIVE data

   • VISUAL Representation of FREQUENCY DISTRIBUTION
     • Histogram
       • Differences
         • Bar chart
           • Nominal
             • Gap btw the bars
         • Histogram
           • Continuous
             • scale of measurement
             • No gaps btw bars
     • Frequency Polygon
       • Purpose is to show the shape of the distribution ...
         • X axis = Midpoint
           • Y axis = Frequency
         • ...for each class of fequency
     • Cumulative Frequency Polygon
       • X axis = LIMITS of the intervals
         • Y axis = Cumulative frequency
     • Differences
       • FP can compare more than 2 freq distribution while H only show 1