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## Chapter 3 - Stories Categorical Data Tell

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**Chapter 3**Stories Categorical Data Tell**Data Tables**Data Tables are DIFFICULT to gain understanding from. So...here are the three rules:**Three Rules of Data Analysis**• Make a Picture • Make a Picture • Make a Picture**Titanic Data**........, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, alive, .........**Frequency Tables**To make a picture, the first thing to do is to make "piles" Count the number of each and make a table. Sometime we don't want to know counts and we want to know proportions (percentages.) Relative Frequency Table**Another look at the Titanic...**It's much easier to look at a frequency table, rather than the data itself.**Cummulative Frequency**the sum of the frequency for that class and all previous classes**Walking in Circles Data**10 Students Walked out on the Right 19 Students Walked out on the Left 20 Students Walked the entire way Create a frequency table, include: frequencies, relative frequencies, and cummulative frequencies. Submit Answers Here**Practice Time Part 2**Make a frequency table (from two slides ago) with the following data. Be sure to include the frequency, relative frequency, and cummulative frequency. You may use a calculator (you have one, your phone has one, or your computer has one.) CLICK HERE FOR DATA**Two Charts for Categorical Data**Bar Chart Shows the counts for each category. Widths should be the same for each bar. Chart should start at zero.**This is what the same chart would look like if you didn't**start at zero...**Relative Frequency Bar Chart**If you replace the counts with percentages, you get a relative frequency bar chart.**Second Chart...Pie Chart**Shows the whole group of cases as a circle. They slice the circle into pieces whose sizes are proportional to the fraction of the whole in each category.**More Titanic Charts**Click Here to View**Homework: page 39, #5 - 8**Be sure to answer all the questions asked. If it asks for a sentence, write a complete sentence.