Reviewing Surveys and Variables Preparing for Quiz 101

2 General Definitions 1.__________The art & science of collecting, analyzing, presenting and interpreting data. 2.Two (dictionary) meanings A____________________ meanings of Statistics B____________________ 3.__________It’s the branch of mathematics that Statistics belongs to. 4.Why is Statistics Different from other math disciplines? A___________________B ___________________ 5. How can statistics help us? _____________________________________________

3 General Definitions in Statistics 6._______The entire collection of individuals or objects about which information is desired. 7._______Statistical surveys usually begin with this. We want an answer. 8._______A subset of the population selected for a study by some specific criteria or prescribed manner.

4 General Definitions in Statistics Cont’d 9.________An object which is one member of the sample. The member could be a person, animal or thing. 10.________Any characteristics of an individual. These take on different values for different individuals. 11.________A study using the entire population.

5 Key Vocabulary Continued 12.________Numbers collected in a particular context. During a survey, the interviewer collects it. Always has units. 13._______A voluntary encounter between strangers, one the interviewer and the other the individual. The interviewer seeks information ______________ _____________________.

6 Key Vocabulary Continued 14._________Take the conclusions and decide if they apply ________________ _________________ or ____________________. 15._________Take the data. Crunch it. __________________. 16.What is good data? _____________________________________ 17. What is bad data? ________________________________________

7 Variables Come in 2 Varieties 1. _________ (or __________) 2.__________ (or __________)

8 ________ Variable Characteristics 1.Recorded __________________ 2.Records which of ___________groups ______________________________ 3.Count _________category_________ _______________________________ 4.Can calculate ____________________ 5.Includes all _____________________ 6.Graphing: ______________________

9 ______________ Variable Characteristics 1.Possible responses _______________ 2.Includes values ___________operations like ___________________________ 3.Includes answers to________________ questions 4.Includes ‘______’ 5.Graph:__________________________

10 2 Types of ____________ Variables 1.__________If this variable is a set of___________________, we call it this. (i.e., it’s a number but it only comes in certain values). Can be ________. 2.__________If this variable forms__________ ____________, we call it this. (i.e., it’s a number & it can be any value). Can be __________.

Venn Diagrams Draw a Venn Diagram that shows the relationship between an Individual, Population and Sample for a Normal Survey. Draw a Venn Diagram that shows the relationship between an Individual, Population and Sample for a Census. 11

12 What Else? Don’t forget to study this tonight.

13 Elements in a Survey 1What ________ is to be answered? 2Why specifically are we ____________ ____________? 3What __________ is going to be used to _____________________? 4What ___________ of the population ______________ the whole? 5How is the ______ chosen? Is it ________?

14 Elements in a Survey 6How many _________ in the _______ are chosen in what ________? 7 What is the _______ to be measured and what ____ represents that ________? 8What are the ______ for each piece of ________________? 9Any question about the ___________ of the data?

15 Elements in a Survey 10What are some ______________ to be drawn about the results? 11 Can we apply the __________ to the _________________?

Quiz #101 (for Period 6: Butterfly #101) Quiz Itself Clear Desks Pencil Eraser No Calculator needed 2 pages to complete When finished, turn into HW box at front of room Questions? Please raise your hand and ask BRING CALCULATORS, PROTRACTOR, COMPASS TO CLASS TOMORROW Homework Turn in HW to the Homework Box for your period New HW #106 will be delivered to you. Due tomorrow We will pass back previous HW’s. KEEP ALL OF THEM for Resubmission at end of 1 st Quarter 16