Introduction
Greetings to you all Grade 10s of mathematical literacy students. Welcome to our first class on WebQuest.
Task
1. The masses of swimmers in a South African team are;
72 kg 68 kg 71 kg 73kg
65kg 74kg 72kg 77kg
Calculate the mean mass.
2. The mass of five individual 50 cent coins in gram;
2,0 1.9 2,2 1,8 2,1.
What is the median mean?
3. A boutique recorded the sizes of wedding dresses they sold within a week as;
8 12 10 8 14 12 10 10 16.
what is the mode size?
4. The energy used, in kilojoules per half hour, for various types of activities is listed;
| ACTIVITY | KILOJOULES |
| slow walking | 400 KJ |
| swimming | 800 KJ |
| watching Tv | 200 KJ |
| jogging | 1000 KJ |
| dancing | 600 KJ |
Determine the range of energy used for various activities.
Process
Evaluation
| QUESTION | WHAT IS EXPECTED |
| 1. | adding the data and dividing by the total number of values (2), sum of values divide by total number of values (1), Answer in kg (2). (5 marks) |
| 2. | arranging the values in ascending order (2), finding the median or middle value (1). (3 marks) |
| 3. | finding the most value/values that appear the most in a data set. |
| 4. | formula of largest value minus smallest value (2), writing down the value (1), answer in KJ (2). (5 marks) |
Conclusion
Data handling is a way of collecting, organizing and summarizing data. At the end of the lesson especially for those who are still finding it hard to leave their names so that I can arrange an online class to help where you guys are having problems.
For the next WebQuest please go through page 190-192 that deals with tariffs so that it will be easy for me to explain what you already have meaning of.