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Understanding Statistics: The Science of Data Analysis

Statistics is the science of analyzing data to answer questions, make decisions, and draw conclusions. Learn how statistics uses data to quantify ideas and make predictions in various fields. Statistics helps in designing experiments, analyzing trends, and understanding relationships within data sets.

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Understanding Statistics: The Science of Data Analysis

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  1. WhatisStatistics??

  2. Is it this????

  3. Is it this????

  4. Is it this???? Two trains are traveling toward each other on the same track, each at 60 miles per hour. When they are exactly 120 miles apart, a fly takes off from the front of one of the trains, flying toward the other train……….

  5. Is it this???? Two trains are traveling toward each other on the same track, each at 60 miles per hour. When they are exactly 120 miles apart, a fly takes off from the front of one of the trains, flying toward the other train……….

  6. Statistics is all about data. No….Not that Data

  7. Data is a collection of Information The Information could be in the form of Numbers Categories

  8. Numbers Facebook Friends Cost of Haircut Weight Timespent in traffic Salary Cholesterol Level Number of Tweets Cell phone minutes

  9. Categories Mac/PC User Favorite movie Tattooed or not Pepsi/Coca Cola Drinker Political Affiliation Male/Female Type of car you drive iPhoneowner or not

  10. In part, Statistics is displaying data

  11. Or…..more creatively Blue – Twitter Posts Orange - Flickr posts White - Both

  12. Or…..more creatively

  13. Minutes Per Day Delayed in Traffic

  14. Statistics also uses data to answer questions What does the average Golden Retriever puppy weigh?

  15. What percentage of teenagershave tattoos? If the Presidential election was held today, what percent of voters would vote for the candidate that you support?

  16. To answer these questions data are collected from a small sample and used to represent a much larger group. Some teenagers All teenagers

  17. Statistics tells us how to select the sample • and how accurate the results will be.

  18. Statistics is also used to make decisions Can Astrology really predict personality traits?

  19. Can dogs be trained to detect lung cancer from smelling a person’s breath?

  20. In statistics, we learn how to design experiments that are used to determine cause and effect relationships. Can the dog really pick out someone with cancer or was the dog just lucky?

  21. If the dog couldn’t detect lung cancer, we would still expect him to be right some times. How many times would the dog have to be right for us to believe he was not just lucky? . Statistics helps us to quantify ideas like this.

  22. In statistics we learn how to collect and analyze data, and then draw conclusions from the data.

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