1.1.5 Measure ESTION 2 State the difference (4) 1141 ABC Scho hool. has 120 learners in Grade 10, and 27 of them are doing mathematics literacy . This the ages of their learners 23 20 19 17 18 17 17 18 23 19 20 17 17 20 19 18 19 20 17 20 18 18 18 19 28 20 21 Use information above to answer questions that follow. 21 Name the data collection method used to collect the above data ​