TI-83 Excel Sketchpad formulas

      MAT123 Spring 2025 Notes,
Fri, 2/21, Quiz 3 / Lab 3

Comments ... "You Are Not Typical Undergraduate Math Students" Hi,             I write to you now as people who may already have one college degree, who may have decided to make a career change, who need statistics either to complete a math requirement or who will actually be using this material in "life" or as serious undergraduates who wish to learn "statistics."       I do not wish to assign work to "cover all bases" but "make the assignments shorter, perhaps not statistically worthy but academically worthy enough for use." This takes time to create and do justice to the math and to you and your time.     For example, a statistical study of a larger sample is better than a small sample. Go with n = 30 or more, rather than less than 30, for "valid" results. For hw assignments, go with the task but make the length of time to do it shorter, even if the statistical validity is lost the experience is gained.       You will be writing 2 reports -- one for your private use (but shared with me for assignment credit) and the other a brief summary to report to a supervisor or client who is not as statistically savvy as you are.       The reports concern the Middlesex County real estate market of Quiz 1.       Here are a pdf of "Center & Spread" a link to the Center & Spread video and stat123sp25.A.xls, the spread sheet from the video.       The spread sheet used for "Friday, 2/21/25 quiz/lab is similar but more useful.       Friday's quiz/lab IS NOT DUE FRIDAY. Next week's course material is not dependent on it and "feels" very different from what you have been working on.  The above video forshadows some of the new material, and I think enhances the textbook presentation.       I will not take the chance that someone may need office hour time for work with the spreadsheet. Watch the video and make a judgement call.       The Friday, 2/21/25 work IS NOT DUE UNTIL 2/28/2025, BUT WATCH THE ABOVE VIDEO AND PLAY WITH THE SPREAD SHEET AND IF YOU NEED OFFICE HOUR TIME, TELL ME AND WE CAN ARRANGE A MEETING BEFORE NEXT FRIDAY.       A spread sheet will do computation for you, but, you must approach a task you may never have had before -- write about something mathematically without needing to do any arithmetic. Go with confidence.   Stay safe, A2

© 2/20/2025, A2, Agnes Azzolino mathnstuff.com/math/stat/23sp25.8.5.htm