In this section, we explore data by describing and summarizing it using frequency tables, histograms, and box plots, as well as by calculating the mean, median, quartiles, and range.
Attempt these exercises from memory first, without consulting any resources - other than the formulae provided on the question sheet - or using a calculator, except to verify your answers afterwards. Test what you recall before turning to any aids.
Self Evaluation: Check your answers using the worked solutions below.
If you were able to answer all the questions confidently, you are prepared for the subjects in the upcoming section. If you encountered any difficulties, refer to the HELM workbooks provided below to review the topics.
You may wish to consider doing additional practice. Utilize the HELM workbooks provided below to practice as much as you desire.