STUDY!

Tonight, STUDY! How, you ask?

1.) Complete the Progress Checks in My AP Classroom!

• Complete/submit the 18 multiple choice questions to practice! Then, check out your results and try to figure out anything you answered incorrectly!
• For the free response you don't have to worry about submitting your answers--I'm not going to grade all of yours because I want you to use this to study--you can just do these on paper and then use the scoring guide below to check your answers
• Unit 1 Progress Check: 2 Free Response Scoring Guide (Click Me)

2.) Look through your notes, old quizzes, your last test, and any other stuff you have to make sure you know all of the following--here's an outline of what you need to know for your test tomorrow...

• Be able to describe the shape of a distribution completely 
• this was also on today's vocab test
• Know how mean and median compare based on the shape of a distribution
• Know which measures of center/spread are appropriate for a given shape
• Know how to calculate outliers for a given data set:
• Fences: work for any data set
• Normal model: any value that is more than 3 standard deviations away from the mean is an outlier
• Describe a distribution given a histogram
• Look at our tip amounts stamp
• Compare distributions given boxplots
• Look at today's GPA example
• Compare distributions given 2 histograms
• We have not seen this in class, but we still compare SOCS--this type of question would combine the ideas from the "tip amounts" example and today's "comparing GPA's" example
• Be able to determine which graph would have the highest/lowest standard deviation
• this would connect to the matching histograms to variables group work we did a few weeks ago
• Shifting and Rescaling -- how do they impact measures of center and spread?
• like the third MC from yesterday's classwork or a few textbook homework problems or the Fahrenheit/Celsius example in our notes
• Know when it's appropriate to use a Normal model
• like in the first free response in the My AP Classroom assignment
• Calculate and interpret z scores 
• We had two stamp problems that based on this--one with you and your sibling's test grades, and one with the amount of weight a player can lift
• Be sure to complete the middle question on the back of yesterday's multiple choice (about Chipotle and Carofano's Italian restaurant)
• Use z-scores to compare performances--like the second (middle front) question) from yesterday's classwork
• Know how to use normalcdf and when to use normalcdf for a given problem 
• (like our "storms" classwork yesterday, or our IQ homework, ketchup homework or our Chipotle slides)
• Know how to use invnorm and when to use invnorm 
• (like our IQ or ketchup homework or our Chipotle slides or the last multiple choice from yesterday's classwork)
• Also know how to use invnorm to find the cutoffs for "middle percents," or to find IQR
• Be ready for more writing on Thursday's test! Some tips:
• REWORD THE QUESTION
• Always use context
• Remember to describe or compare SOCS
• Always directly answer the question--be clear
• If you are asked to explain your reasoning, explain your reasoning!
• Always answer specific to the given question/context--never answer in generalities
• Here are some sample answers from our first unit test you can check out:
• Mid Unit Test Sample Responses (Click Me!)

3.) Here is the MC homework and answers from yesterday in class:

• Ch. 6 MC Classwork (Click Me)
• Chapter 6 MC Answers:
• 5.) Some descriptive statistics....B
• At a college the scores on the chemistry....
• 7.) Suppose that the distribution....A
• The caffeine content....C
• The sodium content of meals at Chipotle....D
• Based on the Normal model for car speeds...C

4.) Here are the "storms" answers too!

• Storms Free Response (Weds. Classwork)
• a.) 0.0098 = 0.98%
• b.) 0.676 = 67.6%
• c.) 0.1217 = 12.17%
• d.) About 9 minor storms, about 32 (or 33) mild storms, about 6 super storms, and 0 or 1 are not classified (make sure all answers add up to 48)

How else can I study?

• Watch Unit 1 AP Stat Guy videos (or any other videos)
• Watch the video I shared in Remind for help with normalcdf/invnorm
• Use Khan Academy = videos and practice
• Create an outline from your notes that addresses each of the bullets above (for the stuff on your test)
• Go back to your last test and figure out/re-write anything that was incorrect

Lastly, here's a sample "comparing boxplots" question from period H today:

Tuesday = STUDY YOUR VOCAB!

Tomorrow we start class with our (25 minute) vocabulary test--come ready to earn an A!

• Vocab test outline:
• Test includes 20 to 25 matching vocab (match each term to its definition)
• There are also some short answer questions...things like....
• List measures of center/spread
• Name the appropriate measures of center/spread for a symmetric or skewed distribution
• Determine if a given graphical display is used for categorical or quantitative data
• Describe the shape of a given distribution 
• Know how the mean and median relate based on the shape of a distribution
• Here's your vocab list:
• Quantitative Variable
• Categorical Variable
• Stemplot
• Histogram
• Boxplot
• Ogive
• Skewed Left/Right
• Center
• Spread
• Mean
• Median
• IQR (what is it? how is it calculated?)
• Standard Deviation
• Range
• Variance
• Percentile
• Q1/Q3
• Outlier (know how to find outliers 2 ways--fences work for any distribution, 3 or more standard deviations away for the Normal model)
• Shifting
• Rescaling
• Normal model (know its shape, know the 68/95/99.7 rule)
• Z Score/Standardized Value (what does it measure? how is it calculated?)
• Know what measures of center/spread are best/most appropriate based on the shape
• Know all measures of center (mean, median, mode, midrange)
• Know all measures of spread (range, IQR, standard deviation, variance)
• Know which graphical displays are used for categorical data (bar graph, frequency table, pie chart)
• Know which graphical displays are used for quantitative data (histogram, dotplot, stemplot, boxplot, ogive)
• Be able to describe the shape of a given distribution completely (____ and ____)
• Know how mean/median compare depending on the shape of a given distribution

Want to start studying for Thursday's test.....?

Your next assignment in "My AP Classroom" has been assigned!

• I have assigned the second section of multiple choice AND 2 free response questions
• These must be completed by 7:30 am Tuesday; however, it is in your best interest to complete the MC and FR progress checks before Thursday's test--these are a great way to get in some studying!
• Link to log in is on the top right of the blog!

Monday Post = Lots to Read!

Please take the time to read through this whole post....

1.) First, tonight's homework--please complete the "Chapter 6 Wrap Up" worksheet provided in class (or linked below). The answers are also provided below.

• Chapter 6 Wrap Up HW (Click Me!)
• Chapter 6 Wrap Up HW Answer Key:
• a.) 0.704
• b.) 0.0062
• c.) 1.117 fluid ounces
• d.) 1.104 fluid ounces
• d.) Equation: 0.67 = (x - 1.05)/0.08, solve this equation for x
• .0536 = x - 1.05
• 1.1036 fl. oz. = x
• e.) 0.108 fluid ounces (1.104 - .996)

2.) Your next assignment in "My AP Classroom" has been assigned!

• I have assigned the second section of multiple choice AND 2 free response questions
• These must be completed by 7:30 am Tuesday; however, it is in your best interest to complete the MC and FR progress checks before Thursday's test--these are a great way to get in some studying!
• Link to log in is on the top right of the blog!

3.) 2 TESTS this week! 

• Wednesday = Unit 1 Vocab Test = all matching and some short answer
• Thursday = Unit 1 AP MC and AP FR test!

4.) What's on my vocab test Wednesday?

• Here's your vocab list:
• Quantitative Variable
• Categorical Variable
• Stemplot
• Histogram
• Boxplot
• Ogive
• Skewed Left/Right
• Center
• Spread
• Mean
• Median
• IQR (what is it? how is it calculated?)
• Standard Deviation
• Range
• Variance
• Percentile
• Q1/Q3
• Outlier (know how to find outliers 2 ways--fences work for any distribution, 3 or more standard deviations away for the Normal model)
• Shifting
• Rescaling
• Normal model (know its shape, know the 68/95/99.7 rule)
• Z Score/Standardized Value (what does it measure? how is it calculated?)
• Know what measures of center/spread are best/most appropriate based on the shape
• Know all measures of center (mean, median, mode, midrange)
• Know all measures of spread (range, IQR, standard deviation, variance)
• Know which graphical displays are used for categorical data (bar graph, frequency table, pie chart)
• Know which graphical displays are used for quantitative data (histogram, dotplot, stemplot, boxplot, ogive)
• Be able to describe the shape of a given distribution completely (____ and ____)
• Know how mean/median compare depending on the shape of a given distribution

5.) Be ready for more writing on Thursday's test! Some tips:

• REWORD THE QUESTION
• Always use context
• Remember to describe or compare SOCS
• Always directly answer the question--be clear
• If you are asked to explain your reasoning, explain your reasoning!
• Always answer specific to the given question/context--never answer in generalities
• Here are some sample answers from our first unit test you can check out:
• Mid Unit Test Sample Responses (Click Me!)

Weekend HW!

This weekend please complete the "Calculating Z Scores and Percentiles" worksheet provided in class or linked below. 

• Here's the HW if you need it:
• Calculating Z Scores and Percentiles
• For questions 2a-2e you DO NOT have to show the z scores unless you use a ztable; you can just show a shaded model and your normalcdf work (be sure to label lower, upper, mean, standard deviation
• For 2f, 2g show a shaded model and your invnorm work (be sure to label area, mean, standard deviation, and tail if you have that option)
• For 2H you need to find IQR....
• What is IQR--how do we calculate it?
• Find the two values you need to calculate IQR--think about what percentiles these represent!
• You got this!
• Always check your answers! Here's the key(s):
• HW Key Page 1 (Click Me!)
• HW Key Page 2 (Click Me!)
• The key doesn't have an answer for 2i, so here you go:
• z = 1.4; A person with an IQ of 121 has an IQ that falls 1.4 standard deviations above the average (IQ). 

Thursday HW (and a lil' extra credit opportunity)

Tonight please complete the following in your textbook. AND CHECK YOUR ANSWERS IN THE BACK!

• Page 125-126: 19, 27, 33, 41bc,  
• I think tonight it would be a good idea to practice using the "calculator method" since you practiced z-scores last night, but technically you can do these using either method.
• Want extra credit?
• Show the work for BOTH the z-table AND the calculator methods for 33abc and 41bc and you'll get some homework extra credit!

Wednesday HW!

Tonight, please complete questions A, B, and C from our "note slides" about Chipotle (also posted below).

• I would do these on separate paper, not in your notes (but really it's up to you)
• Question C is just like what we did in our notes today--maybe do that first?
• Question B is the trickiest--we did not see an example like this in class, but I want you to try to figure it out! Maybe save this for last
• Hint: for B you will have to calculate 2 z-scores and look up 2 values in the z table....
• Question C is just like what we did in our notes today--maybe do that first?
• For each of these:
• Sketch a shaded model
• Calculate the z-score (show work)
• Use the z-table to look up the "% to the left" and then use this info to determine your "final answer"
• Hint: for B you will have to calculate 2 z-scores and look up 2 values in the z table.....
• Absent or need some help with this?
• Read the "Finding Normal Percentiles by Hand" on p. 111 AND "Working with Normal Models I: Step by Step: on p. 113.
• Watch AP Stat Guy Videos (link is on the right of this blog)
• Unit 1 Videos 8, 9, 10, and 11
• Videos 9, 10, and 11 deal with the content for today/tomorrow/Friday's class.
• Oh, and here are the answers so you can check:
• a.) 98.61%
• b.) 9.06%
• c.) 72.57%

Tuesday HW

Tonight please complete the worksheet provided in class or linked below--"The Normal Model and the Empirical (68/95/99.7) Rule." 

• It might be a good idea to sketch your Normal model for heights of adult American men on a separate piece of paper--you'll need it for all the questions on the back and it might be annoying to have to keep flipping back and forth.
• Here's the homework in case you need it:
• Tuesday HW! Click Me!
• Absent or need some more info about what we learned today?
• Check out this AP Stat Guy Video! Click Me!
• Or, read about the 68/95/99.7 Rule on pages 109 to the top of p. 111
• Or simply Google Empirical rule! If you find a great video or site please send it to me via Remind for me to share!

Tomorrow we'll start class with this question--what % of people have an IQ above 123? How can we try to figure this out? 

See you there!