1.1 Populations and Samplesl population: .(the population is often too large for us to examine each of its members)l sample: .(In order for the sample to be informative about the total population, it must be, in some sense, representative of that population)1.2 Frequency Tables and Graphseg. The following data represent the number of days of sick leave taken by each of 50 workers of a given company over the last 6 weeks:
