Introduction
Chapter Name : Statistics |
Sub Topic Code : 104_11_15_01_01 |
Topic Name : Introduction |
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Sub Topic Name : Introduction |
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Introduction
• Statistics deals with data collected for specific purposes. • A measure of central tendency gives idea where data is centred. • In order to have better data interpretation we should know how data is scattered.
Pre-Requisites:
• Knowledge of representing data graphically and in tabular form. • Knowledge of measure of central tendency of data.
Activity:
By making household statistical table you will find out which type of food is consumed more.
Real Life Question:
How do sports recruiters check out for potential athletes?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Statistics | Statistics is a method of gathering, analyzing and making conclusions from data. |
| Central tendency | Central tendency gives rough idea where data points are centered. |
| Mean | Balance point. |
| Median | Middle value when data is ordered. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Excel Sheet | Collect data of household purchases of food and drink and make an excel sheet. Find mean and median. |
Real life uses :
Statistics is used in business, sports, stock exchange, finding population growth, literacy rate etc.
Places to visit :
Look for nutrient intake of your household members and make a statistical chart.
Practical examples around us
| Examples | Explainations |
|---|---|
| Business | People who pick out merchandise for retail stores use statistics. They look to find out what styles and colors are sold the best in previous season and then they decide what to buy. |
What you learn in Theory:
Measure of central tendency of data is not sufficient for better data interpretation.
What you learn in Practice:
If mean and median of runs scored by two batsmen are equal we cannot say their performance is same. We need a variable factor called measure of deviation for knowing the performance.