1. Review For Quiz on Pie Charts
Constructing Pie Charts
Deconstructing Pie Charts
Select Vocabulary from Surveys & Variables

2. Deconstructing Pie Charts
4/14/2017
What is a Pie Chart?
A pie chart or __________________________
______________________________________
What is another name for a Pie Chart?
_____________________________________
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

3. Deconstructing Pie Charts
4/14/2017
What is a Pie Chart?
A pie chart or circle graph has sectors that visually display proportional parts of a total set of data that share a common variable
Another name: Circle Graph
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

4. 4 Pie Chart Characteristics
Deconstructing Pie Charts
4/14/2017
4 Pie Chart Characteristics
Help________________________________ ___________________________________.
Help _________________________________ ____________________________________.
Especially useful _____________________.
Most effective when ____________________ ____________________________________.
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

5. 4 Pie Chart Characteristics
Deconstructing Pie Charts
4/14/2017
4 Pie Chart Characteristics
Help an audience understand distribution of data quickly and easily.
Help to see how a total is divided into categories
Especially useful with categorical data
Most effective when the number of segments is 10 or fewer
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

6. Reviewing Variable Types
Deconstructing Pie Charts
4/14/2017
Reviewing Variable Types
__________ (or __________)
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

7. Variable Vocabulary: Variables Come in 2 Varieties
Deconstructing Pie Charts
4/14/2017
Variable Vocabulary: Variables Come in 2 Varieties
Categorical (or Qualitative)
Quantitative (or Numerical)
Categorical or Qualitative
Quantitative or Numerical
7 Deconstructing Pie Charts

8. Types of Quantitative Variables

9. Types of Quantitative Variables

10. Reviewing _________ Variables. 6 Characteristics
Deconstructing Pie Charts
4/14/2017
Reviewing _________ Variables. 6 Characteristics
Recorded usually _________________
Records which of several ___________ _____________ belongs to
Count data in each ________, but ______________ should not ________ it
Can calculate ____________________
Includes all _____________________
Graphing:______________________
7 Deconstructing Pie Charts

11. Categorical Variables
Deconstructing Pie Charts
4/14/2017
Categorical Variables
Recorded usually with words
Records which of several groups an individual belongs to
Count data in each group, but you logically should not average it
Can calculate %age distributions
Includes all yes/no questions
Graphing: best illustrated with a pie chart
7 Deconstructing Pie Charts

12. 2 Types of Quantitative Variables
Deconstructing Pie Charts
4/14/2017
2 Types of Quantitative Variables
__________ If the Q variable is a set of isolated points on the number line, we call it this (i.e., it’s a number but it only comes in certain values). Can be counted
__________ If the Q variable forms an entire interval along the number line, we call it this (i.e., it’s a number & it can be any value). Can be measured
Discrete
Continuous
7 Deconstructing Pie Charts

13. 2 Types of Quantitative Variables
Deconstructing Pie Charts
4/14/2017
2 Types of Quantitative Variables
Discrete If the Q variable is a set Quantitative of isolated points on the number line, we call it this (i.e., it’s a number but it only comes in certain values). Can be counted
Continuous If the Q variable forms an entire Quantitative interval along the number line, we Variable call it this (i.e., it’s a number & it can be any value). Can be measured
Variable
Discrete
Continuous
7 Deconstructing Pie Charts

14. Vocabulary from Surveys
Define a Population in a statistical sense: _______________________________
Define Data in a statistical sense: ________________________________

15. Vocabulary from Surveys
1. Define a Population in a statistical sense: A population is an entire collection of individuals or objects about which information is desired.
2. Define Data in a statistical sense Data are numbers collected in a particular context. During a survey, the interviewer collects it. It always has units.

16. Vocabulary from Surveys
What is good data? _______________________________
What is bad data? ________________________________

17. Vocabulary from Surveys
1. Good Data in a statistical sense
Good Data is the result of intelligent effort and good random sampling methods.
2. Bad Data in a statistical sense
Bad Data are the result of laziness, lack of understanding, the desire to mislead others or bad sampling methods.

18. Deconstructing Pie Charts
4/14/2017
End Review for Quiz
7 Deconstructing Pie Charts

19. Deconstructing Pie Charts
4/14/2017
Classwork & Homework
Use the terms you’ve learned to deconstruct pie charts
Answer some the ‘usual’ questions about the nature of the survey using the data and your powers of analysis.
7 Deconstructing Pie Charts

21. Grape Crush Survey

22. Grape Crush Survey

24. Deconstruction of Pie College Profs Time

25. Deconstruction of Pie College Profs Time

26. Answering ?s About Profs
What is question to answer?
What is the population?
Describe the sample: numbers, units other description
Variables? Q or C?
Units or 2 categories
Conclusions?

27. Answering ?s About Profs
What is question to answer?
In teaching
What is the population?
Typical college professors
Describe the sample: numbers, units other description
‘an average’ college professor
Variables? Q or C?
Time; Categorical
Units or 2 categories
Teaching, consulting, research, growth, comm serv, etc
Conclusions?
Most time is spent in teaching

28. Broadband
Market
Share

29. Broadband Companies

30. Broadband Companies

31. Quiz #102 Test Taking Strategies
What you need:
Graphing Calculator
Protractor
Compass
Pencil
Eraser
HW to the HW Box
How you take test:
Answer Vocabulary
Then do #2 Deconstruction
Then do #1 Construction of graph
WATCH THE TIME—
This test is longer