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Unit 1 Chapter 6-1 8/11/2010

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Warm-Up Read over the “What am I learning today?” info. Write your HW for today. 1 st period – Get out your graphs. 2 nd and 4 th - I am passing out definition papers for you to write on. Sign the paper to say that you got your book. Check to make sure that your book number is correct.

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Line Graph Shows a change over time.

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Bar Graph Compares different quantities.

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Pictograph Uses symbols or pictures to represent data.

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Histogram Bar graph that shows data within an interval.

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Circle Graph/Pie Chart Round graph that shows percentages of a whole

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What am I Learning Today? Data collection Data organization How will I show that I learned it? Identify a set of data as categorical or numerical Organize data into a frequency table Describe a data set

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Vocabulary Data: Information, facts, or numbers that describe something Categorical data: Describes a quality such as a person’s gender or favorite thing. Numerical data: Gives a count or measurement Frequency Table: Chart for organizing data that shows the number of times an item, number, or event occurs in the data set

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How do you collect data? QuestionsAnswers Survey a small portion of the population, which is representative of the whole. What type of data can be collected? Categorical data Numerical data (What is your favorite color?) (How many slices of pizza can you eat?) How is data recorded and organized?recorded Frequency table Why is it important to organize data in a table? Easier to recognize patterns and relationships and draw conclusions about the data Why is data collected?Obtain information about a population in order to make educated decisions or answer particular questions

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Numerical Data and Categorical Data Kind of pet in householdFavorite color Test scoresHow many siblings Student heightsFavorite candy Hours of TV viewing Weight States you’ve visitedLeast favorite chore

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Use the following data to create a frequency table that displays the favorite colors of students in your class. Favorite Colors Blue YellowGreen RedYellowPurple GreenRed Purple GreenPurpleRedBlack

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Numerical Data and Categorical Data Kind of pet in householdFavorite color Test scoresHow many siblings Student heightsFavorite candy Hours of TV viewing Weight States you’ve visitedLeast favorite chore

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Use the following data to create a frequency table that displays the favorite colors of students in your class. Favorite Colors Blue YellowGreen RedYellowPurple GreenRed Purple GreenPurpleRedBlack

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Favorite Colors TallyFrequency Redl l 4 Greenl l l3 Purplel l 4 Blackl1 Bluel 2 Yellowl 2

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Reading a Table DayTime Monday 15 min Tuesday 18 min Wednesday 18 min Thursday 21 min Friday 21 min Saturday 24 min Sunday 24 min Ms. Neely jumps rope each day as part of her fitness program. She made a table to keep track of how much time she spent jumping rope each day for one week. Is this the best way to organize the frequency table? Why or why not? What pattern do you notice in this list of times? If the pattern continues, how much time would you expect Ms. Neely to jump rope on the following Monday? What conclusion can you draw from this table about Ms. Neely’s fitness program?

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What Next? Periods 1, 2, & 4 – HW – Problem Solving WB 6-1 p. 44

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