ECMT1010 Lecture Notes - Lecture 1: Simple Random Sample, Attention Deficit Hyperactivity Disorder, Statistical Inference
13 Aug 2018
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Lecturer: tim fisher: statistical literacy: understanding what statistics brings to analyse statistical data. Statistics is all about data collecting, describing and analysing data: data is everywhere. Data: measurements based on a set of individual units or cases. A dataset comprises a set of variables measured on individual cases: we obtain information about cases or units in a dataset, and generally record the information for each case in a row of a data table. A variable is any characteristic that is recorded for each case. The variables generally correspond to the columns in a data table. A categorical variable divides the cases into groups, placing each case in exactly one of two or more categories. (limited categories of answers) A quantitative variable measures or records a numerical quantity for each case. Example question: data from iceland was used to determine that 90% of icelanders have access to the internet, the highest rate of any country.
