Data are random and miscellaneous

Data are random and miscellaneous

1. Presenting Data in Context

   • Year to date values
   • Table of values
   • Graphs

2. Time Series Graphs

   • Months of years in the horizontal axis & possible values on vertical axis

3. Tally Plots (Histogram)

   • Accumulation of different values as they occur without trying to display the time order sequence

4. Comparing Time Series

   • Using two time series graphs togetherfor insight

5. Averages

   • Numerical summarie of a set of data
   • Sum of the values divided by the number of values
   • Measures the location of values

6. Ranges

   • Measure of the dispersion of a set of values
   • Maximun values minus minimum value

7. First Principle for Understanding Data

   • No data have meaning apart from their context