Mathematics
Data handling
Educator section
Memorandum
Leaner section
Content
Activity: to use simple tables to collect data and answer questions [lu 5.2]
To organise and record data [lu 5.4]
1. Let's do a survey of the results obtained by the class in the mental arithmetic test. Complete the following simple table:
| Number of questions answered correctly | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 1 |
| Number of learners | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ | __ |
2. Answer the following questions according to the above table:
2.1 How many learners wrote the mental arithmetic test? ___________________
2.2 How many learners attained full marks? ______________________________
2.3 How many learners only answered 8 questions correctly? ________________
2.4 How many questions were answered correctly by most of the learners? _____
2.5 Was it an easy mental arithmetic test? _______________________________
Motivate your answer: ___________________________________________
_____________________________________________________________________
CLASS DISCUSSION
Discuss the following and see if you can arrive at answers.
1. Why do you think it is important for your principal to know exactly how many learners will be in each class next year?
2. Why do you think it is important to know how many people there are in a town?
3. How could one obtain the above information?
Assessment
Learning Outcome 5: The learner will be able to collect, summarise, display and critically analyse data in order to draw conclusions and make predictions, and to interpret and determine chance variation.
Assessment Standard 5.2: We know this when the learner uses simple data collection sheets (requiring tallies) and simple questionnaires (with yes/no type responses) in order to collect data (alone or as a member of a group or team) to answer questions posed by the teacher, class and self,
Assessment Standard 5.4: We know this when the learner organises and records data, using tallies and tables.