category:

Data and Statistics

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Probability

Probability is, in essence, the mathematics of chance. How sure can we be that a particular event is going to happen? When we go to bed at night, we can be sure that the sun will rise the next morning. If today is Monday, then we can be certain that tomorrow is...

Tables

Lists of numerical quantities. If the data set is "small" just listing the data can be done. As the data set becomes larger this is not a good technique. Remember that people can only look at a very small set of numbers without "turning off". Tabular data Pictograms...

Elements of Data Collection

  Collecting data from a complex environment can be time-consuming and expensive. Consequently, it is necessary to have a plan and a systematic collection method that gains maximum information at a minimum cost. Every effort should be made to comply with sound...

Additional Example

Barry takes both Maths and Agronomy as subjects. He is trying to determine in which subject he performs better. 1.1 Barry has the following percentages for his Maths tests during this year:   32  35  38  42  57  58  59  60 ...