Pictograms
Objectives By the end of this lesson, students should be able to: represent data on a pictogram. Use a pictogram.
Activity 1: Brainstorming The general process in data handling is: Collect Data Organise Data Represent Data Conclusion
Activity 1: Brainstorming And the purpose of Data Collection is: To obtain information To keep record To make decisions about important issues To pass information on to others
Activity 1: Brainstorming In a class, there are 20 students. Each student has a mobile phone. The data collected was about the brand of each mobile phone and organized as follows:
Activity 1: Brainstorming
Data Representation After organizing the data, the latter is represented to facilitate the conclusion and there exist different types of data representation. We shall focus on: Pictograms (for this lesson) Bar Chart
Key: represents 1 student Pictograms The data is usually recorded as figures. However, the latter can also be represented as pictures or symbols. Item (Make of mobile) Frequency (Number of Students) Nokia 11 LG 2 Samsung 6 Motorola 1 Key: represents 1 student
Consolidation Work Qu. 1. Teachers in a school were asked about the brand of television they have. The responses are shown in the pictogram below.
Consolidation Work (a) How many teachers use Samsung? _______________ (b) How many more teachers use Sony than LG? __________ (c) How many teachers are there in all in the school? _______ (d) What percentage of teachers in the school use JVC? ____
Consolidation Work Qu. 2. The pictogram shows the monthly budget of a family.
Consolidation Work How much does the family spend on Food? _____________ (b) What is the total amount spent on CWA, CEB and Telephone? _________ (c) What is the family net income? ________________________ (d) How much will the family save in six months if they save the same amount each month? _________________________
End of the Lesson: Pictograms