2's Day

Tonight you have a few things to take care of.....

1.) SIGN UP FOR OUR AP CLASSROOM ONLINE! This must be done by Friday! It's a HW grade!

• First, sign into My AP Online with this link: My AP Online (Click Me!)
• If you already have login information just log in and enter the course code
• If you don't, create one!
• Course codes:
• Note: these vary by period! Pay attention to entering your correct period!
• Period A: WW37KA
• Period D: WMQMZR
• Period E: MXJ7J3
• Period H: EYW632

2.) Tonight's HW: Describe the distribution of ATT customer service times. (This is above the Old Faithful example we did in class)

• Yes, I know we wrote down some bullets for this context a few days ago--but tonight your job is to describe the distribution as we would on the AP Exam!
• Need help writing? Here's an idea for your structure:
• First, restate the question: "The distribution of ATT customer service times is..."
• Next, describe each element of SOCS in context.
• Finally, end with a "generally" statement--generally, how long were most customer service times?
• Here's a sample you can use from class today--describing the distribution of Old Faithful eruption durations that follows the structure suggested above:
• The distribution of Old Faithful eruption durations is bimodal and roughly symmetric (there are no noticeable durations that are outliers). The median duration was between 4 and 4.5 minutes, with a range of 4 minutes. Generally, most eruptions lasted between 4 to 5 minutes OR 1.5 to 2.5 minutes (very few eruptions lasted 2.5 to 3.5 or over 5 minutes).
• Note: you would still earn full credit without the italicized stuff

3.) We will start class on Thursday with our first vocab quiz. Take advantage of this opportunity to earn a 100%! Study, study, study! Make a quizlet or flash cards or something!

Here's the list of vocab you need to know: (some definitions are in parentheses)

• What graphical displays are used for categorical data?
• What graphical displays are used for quantitative data?
• Histogram (a graphical display that shows us frequencies of data values for a given interval)
• Stemplot (a graphical display that allows us to re-create the original data set; the only graph that always allows us to do so)
• Boxplot (a graphical display that shows the 5 number summary and outliers)
• 5 Number Summary (min, q1, median, q3, max)
• Mean
• Median
• Range
• IQR (know it's a measure of spread, know how it's calculated)
• Know the fence formulas and what we use these fences for
• Describe a distribution: what do you need to talk about/address?
• Skewed Left
• Skewed Right
• Uniform
• Be able to ID the shape of a distribution given a graph
• Categorical Variable
• Quantitative Variable