- For tonight's homework you should enter all data in L2 or L3; don't delete the stuff in L1, we'll need that again tomorrow!
- Please complete AND GRADE questions 1-4 on the "Summer Academy Day 2 HW" worksheet provided in class (or below).
- Question 1 is new stuff--you got this!
- How can we find the median here?
- Think: what is the median? How many data values do we have?
- Note that question #2 gives you the xmin (what to start at) and the x-scale (what to count by); be sure to use that given info!
- Use your notes about creating histograms from class today!
- Question 3 is also new, but this some calculator stuff...
- Look at the middle left slide (calculating summary statistics: 1 Var Stats) for some help....
- OR, google "1 Var Stat using ____" and put your calculator model in the blank
- For example, google "1 Var Stat using TI 83" or "1 Var Stat using Casio"
- For question 4 I just want you to make a boxplot with your calculator--ignore the directions about showing work for fences
- To make a boxplot on your calculator simply enter your data, go to the Stat plot menu, choose the boxplot that shows outliers (the one with the dots), and press ZoomStat
- Then, press TRACE to transfer the boxplot from your calculator to your paper!
- Check out this AP Stat Guy Video if you need help with questions 3 and 4 on your calculator!
- Skip questions 5 and 6.
- ALWAYS CHECK YOUR ANSWERS!
What did we cover in class today?
- We started with a warmup that we put in our notes: finding an overall mean given two samples
- We then discussed this context, multiple choice strategies we could use with this type of problem, and shared a couple different ways to find these types of average
- Today's warmup: A local statistician surveyed residents and asked how many years they had gone to school, including any time spent at a college/university. The statistician collected two samples, one of men, and one of women. The sample of 48 men had an average of 12.89 years of education; for the sample of 60 women, the average was 14.7 years of education. Find the overall mean (average) years of education for all of the people surveyed.
- Then we looked at last night's homework and addressed any questions
- In our notes:
- Percentile: the % of data that falls below a given value
- On to histograms...
- First, we created a histogram completely "by hand" using our Olympic medals data, and took some notes on the steps for creating a histogram
- Then we went back and learned how to create the same histogram using our graphing calculator to be more efficient
- Finally, we wrapped up class by (quickly) creating a boxplot that shows outliers with our graphing calculators (in sessions B and C only)
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