JSS1 Third Term Mathematics Lesson Note – Introduction to Statistics

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WEEK 8

TOPIC: INTRODUCTION TO STATISTIC

CONTENT:

• Purpose of statistic
• Collection of data in class
• Presentation of Data: Rank-ordered list, Frequency tables, pictogram, bar chart, interpretation of pie chart

PURPOSE OF STATISTICS

Definition

Statistics is a branch of science that is concerned with the methods of collecting, organizing, presenting and analyzing data for a specific purpose.

Information in raw or unorganized form (such as alphabets, numbers, or symbols) that refer to, or represent, conditions, ideas, or objects. Data is limitless and present everywhere in the universe.

Statistics is the branch of mathematics, which deals with the study of data. It involves:

1. Gathering (i.e. collecting) data
2. Sorting and tabulating data
3. Presenting data visually by means of diagrams (charts, tables and graphs)
4. Interpreting results.

Statistics is known to provide useful information in our everyday life:

1. For record keeping
2. To forecast or predict future events
3. For decision making
4. For planning purposes
5. To gather useful information this can be passed from one source to another.

Collection of data for planning purposes

Planning is one of the reasons for collecting data.

Examples include

• The Daily Export Report of barrels of petrol enables the government of Nigeria to plan the budgets. This is called economic planning.

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