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**Review For Quiz on Pie Charts**

Constructing Pie Charts Deconstructing Pie Charts Select Vocabulary from Surveys & Variables

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**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

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**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

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**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

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**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

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**Reviewing Variable Types**

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

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**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

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**Types of Quantitative Variables**

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**Types of Quantitative Variables**

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**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

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**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

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**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

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**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

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**Vocabulary from Surveys**

Define a Population in a statistical sense: _______________________________ Define Data in a statistical sense: ________________________________

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**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.

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**Vocabulary from Surveys**

What is good data? _______________________________ What is bad data? ________________________________

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**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.

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**Deconstructing Pie Charts**

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

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**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

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Grape Crush Survey

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Grape Crush Survey

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**Deconstruction of Pie College Profs Time**

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**Deconstruction of Pie College Profs Time**

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**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?

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**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

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Broadband Market Share

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Broadband Companies

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Broadband Companies

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**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

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