Tables and Graphs. Vocabulary Statistics – The branch of mathematics dealing with the collection, organization, analysis, and interpretation of information.

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Presentation transcript:

Tables and Graphs

Vocabulary Statistics – The branch of mathematics dealing with the collection, organization, analysis, and interpretation of information. Data – Information used in statistics, usually in numerical form. Variable – A characteristic of a person or thing which can be classified, counted, ordered or measured. Population – The set of ALL individuals or objects you want to study. Sample – A subset of the population. Survey – Gathering facts or opinions through an interview or questionnaire. Census – A survey of the entire population of the United States. Random – When each member of the population has an equal chance of being chosen.

Population, Sample, Variable Nike wants to test out a new shoe to see the level of appeal by only releasing it in Florida. After a 3 month trial, the number of purchases is evaluated. What is the population? What is the Sample? What is the Variable?

Finding Percentages Formula Variable # ____________________________ Population #

Example There are 4 green socks, 3 yellow socks, 7 blue socks, and 11 black socks in a drawer. What percentage of the socks in the drawer are green? Yellow? Blue and Black? Black and Green?

Example Mr. Immerman has a bunch of change in his pocket. He has 18 pennies, 10 nickels, 13 dimes, and 4 quarters. What percentage of change is pennies? Nickels or less? Nickels or higher?

Calculating Central Angle X Variable # ____ = ____________________ 360 Population # X= Central Angle of Pie Piece

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Central Angles Green Socks? Blue and Black socks? Pennies?

Circle Graphs (Pie Charts)

Continued…

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Example Out of 35 students, 20 like the Vikings, 10 like the Bears, 4 like the Lions, and 1 likes the Packers. Draw a circle graph showing the distribution of favorite NFL Teams in the class.

Homework Worksheet 1-1