1. 1: Analyzing Categorical Data
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- ALWAYS PLOT YOUR DATA! EXAMPLE Who Texts More—Males or Females
- Males
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Choosing Measures of Center and Spread We now have a choice between two descriptions for center and spread: ________________________________________: Sensitive to extreme observations, and can be misleading when a distribution is skewed or has outliers. Use only for reasonably symmetric distributions that don’t have outliers. 
________________________________________: Resistant to extreme values, and thus the better choice. Usually better for describing a skewed distribution or a distribution with outliers. NOTE: Numerical summaries do not fully describe the shape of a distribution. ALWAYS PLOT YOUR DATA! EXAMPLE Who Texts More—Males or Females? For their final project, a group of AP Statistics students wanted to compare the texting habits of males and females. They asked a random sample of students from their school to record the number of text messages sent and received over a two-day period. Here are their data: Males: 127 44 28 83 0 6 78 6 5 213 73 20 214 28 11 Females: 112 203 102 54 379 305 179 24 127 65 41 27 298 6 130 0 Determine if there are any outliers in either data set using the  rule.
Construct boxplots to compare the male and female data. Compare the distributions of text messages sent and received by males and females. Directory: ourpages -> auto -> 2017 2017 -> Senior Division Solutions 2017 -> Avant garde adademy of broward 2017 -> Have you always wanted to go to space camp? Dreamt of becoming an astronaut here’s your chance! 2017 -> Atlanta, georgia-april 2017-a total solar eclipse occurs when the moon lines up between the earth and the sun-an extremely rare and beautiful event 2017 -> United states history and geography unit 1: The Rise of Industrial America 1877-1914 2017 -> Out-of-Field Notification to Parents/Guardians English 2017 -> Modern History Notes 9-21-2017 Entertainment 2017 -> The secret of change is to focus all of your energy, not on fighting the old, but on building the new 2017 -> The Berlin Conference 1884 Simulation Historical Context 2017 -> Island Biogeography and Biodiversity Part I: Background Reading Download 10.83 Mb. Share with your friends:
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