Strand: DATA ................................ ................................ ................................ ................................ ................................ ..................... 151
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Subject: Mathematics
Class: Basic 6
Term: 1st Term
Week: 8
Strand code: 1
Theme: DATA ................................ ................................ ................................ ................................ ................................ ..................... 151
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In our daily lives in Ghana, we often hear people talk about the "average price" of yam at the market, the "average score" in a class test, or the "average rainfall" during the planting season. This "average" is a very powerful tool in mathematics called the mean. It helps us understand a whole group of numbers by finding a single, typical value that represents the centre of that group. Learning to calculate the mean will help us make better sense of information, compare different groups, and make smarter decisions, whether we are buying goods, checking our school performance, or even understanding sports statistics.
Concept 1: What is Data? Data is simply a collection of information, usually facts or numbers. For example, the ages of all the learners in this class is a set of data. The scores you got in your last RME quiz is another set of data. Example Data Set: The number of goals scored by the Black Stars in their last 5 matches: {2, 1, 3, 0, 4}.
Concept 2: What is the Mean? The mean is what we commonly call the average. It is a single number that represents the "central" or "typical" value of a set of numbers. We find it by sharing the total amount equally among the number of items.
Imagine you and four friends have different numbers of mangoes: 3, 5, 2, 4, and 6. To find the mean, you would put all the mangoes together in one basket and then share them out equally among the five of you. The number of mangoes each person gets is the mean.
Concept 3: The Formula and Steps to Calculate the Mean