Statistics is the science of dealing with data about populations and using statistical techniques to make decisions that affect our lives. It is used extensively in fields like marketing, accounting, and healthcare to better understand data and make effective decisions. Studying statistics allows for simple presentation of complex data, expands individual knowledge and experience, facilitates comparison of large data sets, and helps with forecasting by extrapolating present data to predict future changes. Statistics provides a more reliable basis for decision-making than individual perceptions alone.

1. Why Study Statistics?

2. Etymology of Statistics.
• science of dealing with data about the state or the community that
we live in.

3. ……a branch of mathematics dealing with the collection,
analysis, interpretation, presentation, and organization
of data.
Statistics:

4. Statistics Usage:
• Data is everywhere
• Statistical techniques are used to make many
decisions that affect our lives
• Statistical methods will help you in better
understanding of the data and make effective
decisions.

5. Statistics Usage:
• Extensively used in marketing, accounting, quality
control, consumers, sports people, educators,
hospitals, administration, politicians, e.t.c
• It helps in a better understanding of the world.

6. Why Study Statistics?
• Expression of facts in numbers - One of the main
function of Statistics is to express numbers in easily
understandable language and interpret the results
with certainty.
• Simple presentation- Statistics enables presentation
of complex data in a simple format in terms of
aggregate, average, percentage, graphs, diagrams etc.

7. Why Study Statistics?
• Enlarges individual knowledge and experience-
Statistics expands the horizons of individual
knowledge and understanding.
• It compares facts- It facilitates the comparison of data
and identifying the interrelations between large sets
of data for drawing suitable inferences.

8. Why Study Statistics?
• It helps in forecasting- Extrapolating present data aids
in forecasting likely changes that can be expected in
future.

9. Perception vs Statistics
• Perceptions can be wrong.
• Statistics based on a logical data will never be wrong.
• When taking a decision, it is advisable to trust
statistics rather than our perceptions.

10. • Better understanding of work area will help in taking
effective decisions.

11. The End