Tuesday HW!

Tonight (Tuesday), please complete the following in your textbook:

Page 65: 3, 13, 23 

• For 13 describe SOCS--consider the shape, comment on any outliers/gaps, describe the center by referencing the mean and/or median (use your calculator to calculate these--1 Var Stats), and the spread (referencing range). And be sure everything is written in context!
• I expect to see a couple/few (detailed) sentences written in context! Pay attention to describing shape, find any outliers, calculate the mean or median, and calculate the range--then reference/write about all of these in context!

Page 98: 41a 

Tomorrow in class we'll talk a little about outliers, center (mean/median), and spread (range, IQR, Sx), then we'll start to write up some descriptions of distributions! See you there!

Monday HW!

Here's Monday night's homework:

Page 65: 9b (again, write a couple sentences describing what you see, no fancy vocab yet), 11ac, 17, 19a

Page 91: 3 (but use your calculator, don't do this by hand)

"Answer Key" to check #9b:

• Most vineyards are "smaller," from 0 to 60 acres
• About 28 out of the 36 vineyards were 60 acres or less
• There was one vineyard that was a possible outlier at over 240 acres
• Tomorrow we'll start to add some of the "fancy" stats vocabulary and talk about "SOCS" some more!
  

And again, if you're feeling ambitious, here's Tuesday's HW:

Page 65: 3, 13, 23 

• For 13 describe SOCS--consider the shape, comment on any outliers/gaps, describe the center by referencing the mean and/or median (use your calculator to calculate these--1 Var Stats), and the spread (referencing range). And be sure everything is written in context!

Page 98: 41a 

Weekend HW:

I hope you're feeling confident about today's test! I hope to get them graded by Monday--no promises (dad life can get pretty hectic), but I will do my best to make that happen.

On Monday we'll start our first full week of "real AP Stats." No more textbooks or Star or syllabus stuff, just our class routine of warmup, learn stuff, practice, assessment...and I can't wait! So be ready for some new stuff next week (lots of writing about the graphs we now know how to create).

This weekend, please complete the following for homework:

Page 65: 7ab, 9a and....

Page 91: 13, 23abc, 29ab, 47

• For number 7a (p. 65)you are asked to describe the distribution--for now, I just want you to write a couple sentences describing what this graph tells you about sugar content (%) of different brands of breakfast cereals. You won't need any fancy statistical language here, this is just an intro to us writing about graphical displays
• For number 13 (page 91) you must show work to determine if there are outliers--you can't just create a boxplot on your calculator (you can use the boxplot on your calculator to check your answer, but show the math that proves these are outliers...)
• And remember check your answers in the back of the book!
• Your answer for #7a should include the following info--I wouldn't expect you to use the vocab in the back of the book (yet), so use this as your key
• The distribution of sugar content has two clusters of data
• One cluster is from 0-24(ish) % sugar (lower sugar amounts), and the other is from 40 to 56%(ish) sugar (higher sugar amounts)
• Generally, cereals tend to either have less than 24% sugar or more than 40% sugar,with few brands "in the middle"

And finally, here's Monday night's homework if you're feeling ambitious and want to get a head start:

Page 65: 9b (again, write a couple sentences describing what you see, no fancy vocab yet), 11ac, 17, 19a

Page 91: 3 (but use your calculator, don't do this by hand)

Thursday = Study!

I will be in school tomorrow; however, as we will not learn anything new, YOUR TEST IS TOMORROW! 

Here is a breakdown of the topics on the test: The test has both open ended (free response) and multiple choice questions.

• Create a histogram (using your graphing calculator, like last night's homework)
• Create a boxplot by hand (given a table of summary statistics, like our summer academy notes or last night's homework)
• Know how to find outliers given a data set (this is part of the boxplot process, but could also be it's own question--calculate the fences!)
• Identify variables as categorical or quantitative (provide units for quantitative variables!)
• Use your calculator to find the "1 Var Stats" (mean, standard deviation (Sx), median, min, max, Q1, Q3)
• Calculate probabilities from a two-way table (like our Titanic homework)
• Determine if two variables are related (or independent; remember, independent = not related; this was also on our Titanic hw)
• Identify the explanatory variable (IV) and response variable (DV) given the context of a study
• Determine if a study was a survey, experiment, or observational study
• Reading histograms (like last night's "heights" problem)
• Find sample size
• Estimate the maximum possible range
• Find the proportion (%) of data values above/below a given value
• BONUS: estimate the median (what two values it falls between)
• Reading boxplots
• Identify the median, Q1, Q3, and outliers given a boxplot
• Calculate the IQR (Q3 - Q1) given a boxplot
• Calculate the range (Max - Min) given a boxplot
• Find the overall mean given two samples (we took notes on this in day 3 of the summer academy)
• Know which graphical displays are appropriate for categorical or quantitative data

Most of this test reviews the content from the summer assignment and what we've learned over the past week...

• Look over your homework and the answer keys provided
• Look over your class notes
• Look over your summer assignment...
• These questions from your summer assignment will be reflected on your test:
• #6
• #7
• #13 to 17
• #19 to 22
• #23
• #26, 27

Feel free to send me an email or Remind message with any questions! Be prepared to ace this test! Study!

When's Day HW!

Tonight please complete the "Pop Quiz: Histograms" worksheet provided in class (don't worry, it's just practice for our test on Monday, not an actual pop quiz).

Then, add this question to the back of your paper--you must do this to receive full credit for your homework!

• Copy the table of summary values onto the back of your paper (this is also on your handout of chapter 4 slides)

• Then, use this summary table to create a boxplot! (this is how this may appear on Monday's test)!
• DO NOT use your calculator to create the boxplot--on the test you will only be given summary values (like this) and will not have the full data set, so you cannot use the calculator--you must create the boxplot by hand
• Use your notes from the summer--if that doesn't work, watch the AP Stats Guy video on creating a boxplot!
• First, draw your x axis and label it both in words and numbers. Title your graph.
• Next, plot Q1, Median, and Q3 (the box)
• Now, calculate the fences to determine if there are outliers; you must show this work
• Plot any outliers
• Now, draw the arms to the highest and lowest data values (from the summary table) that are not outliers!

Tomorrow in class we'll get into some "new stuff" after we answer any homework questions--I'll see you there!

Oh, and here's the rest of the homework in case you lost yours or you were out:

Tuesday HW/Quiz Tomorrow!

Tonight you have a few things you're responsible for:

• Please complete the "Two Way Tables: Probability and Independence" Titanic worksheet provided in class (or below).
• Take a look at the image/homework below for a couple extra credit questions!
• To earn extra credit you can add these questions to the back of your homework paper and then answer each--you must write the question!
• Study! We have a quiz tomorrow--vocab and an open-ended context! Here's what's on the quiz:
• Analyze a context (like last night's hw)
• Chapter 2 Vocab (multiple choice)
• Data
• Categorical Data/Categorical Variable
• Quantitative Data/Quantitative Variable
• Relative
• statistic (with the lower-case s)
• Response Variable
• What statistics are used with quantitative data?
• What statistic is used to summarize categorical data?
• What graphical displays are used for quantitative data?
• What graphical displays are used for categorical data?

Tonight's homework and our warmups on Thursday/Friday are all preparation for our test on Monday! The test on Monday will cover everything we've learned from our summer sessions up to Friday; everyone will be taking this test, even if you added the class late; students who added late will have to have all work made up by this point and will be on-track with the class from this test forward.

Tomorrow it's back to AP Stats--I can't wait! See you there!

Oh, and....

If you haven't yet, sign up for Remind! 

• This will be a major tool we use for class announcements and communication; students can message one another or message me directly with questions!
• If you have a phone it is required that you have Remind for our class...
• Download the free Remind app
• Enter the class code: @ehapstat
• Or, if you prefer not to use the app (or can't), text @ehapstat to 81010

Tonight's Homework with Extra Credit Added:

Weekend HW!

This weekend please practice creating graphical displays using your graphing calculator! Create and sketch a histogram AND boxplot for each data set provided in class (or below). You must also create the boxplot for full credit, although this is not stated in the directions.

The focus of this homework is to practice using our calculator to create histograms and boxplots--so do that! Do not do this entirely "by hand!" If you need more guidance than the steps below provide, do some Googling! We have to figure out and get comfortable with all this calculator stuff!

• For each context (Wayne Gretzky, EHHS Boys BBall) create a histogram using your graphing calculator...
• First, enter the data (probably in L1, but could be in another list)
• I would next calculate the 1 Var Stats to see the max and min
• Use this max/min info to determine what you should "start at, end at, and count by"
• Draw your axes and label them in words and numbers
• Now, let's get back to the calculator
• Next, go to your "Stat Plot" menu, and choose a plot...
• Turn that plot on, choose a histogram
• XList = where you typed your data (probably L1)
• Freq = 1 (b/c we typed each data value in individually, or once)
• If we press ZoomStat (Zoom #9) we will see a histogram, but when we press trace we can see that the calculator starts at a weird value and uses a weird x-scale--we don't want that, so we have to set up our window
• Press Window--now, look at the axes you have labeled in numbers--fill in the values for xmin, xmax, xscl, ymin, ymax, yscl
• Press graph
• Press the TRACE button to see the interval for the bin (look at your cursor to see which bin is highlighted), and the n value on the bottom right tells you the frequency or height of that bin
• Use this feature to translate the bins and their heights onto your paper
• Now, create a boxplot, and draw this above your histogram
• Go to your Stat Plot, choose another plot, and turn it on
• Be sure to (always) select the boxplot that shows outliers
• For a boxplot we do not have bins that have to align with specific x-values, so we can just use ZoomStat (Zoom, #9)
• Press trace to see the values of any outliers, where the arms reach, and where Q1, Med, and Q3 are for "the box"
• Translate this info onto your paper to draw the boxplot
• For practice, show the work for the fences--that's how we prove if there are/are not outliers (you'll have to do this on your test eventually)

Repeat this process for both data sets! 

Do not do any of the "Describe the distribution" stuff at the bottom! We'll start to learn this next week, and we'll come back to these histograms and use them as our classwork examples/notes when we start to learn how to describe distributions.

If you haven't yet, sign up for Remind! There are only 10ish people left to sign up!

• This will be a major tool we use for class announcements and communication; students can message one another or message me directly with questions!
• If you have a phone it is required that you have Remind for our class...
• Download the free Remind app
• Enter the class code: @ehapstat
• Or, if you prefer not to use the app (or can't), text @ehapstat to 81010

And lastly, remember we have a "Chapter 2 Quiz" next Wednesday! The quiz will have two parts; you will have about 15 minutes:

• Analyze a context (like last night's hw)
• Chapter 2 Vocab (multiple choice)
• Data
• Categorical Data/Categorical Variable
• Quantitative Data/Quantitative Variable
• Relative
• statistic (with the lower-case s)
• Response Variable
• What statistics are used with quantitative data?
• What statistic is used to summarize categorical data?
• What graphical displays are used for quantitative data?
• What graphical displays are used for categorical data?