Stat 1000: Tips for Assignment 5
Published: Tue, 02/07/12
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If you are taking the course by Distance/Online (Sections D01, D02, etc.), click here for my tips for your Assignment 5.
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Tips will be sent once Assignment 5 is posted.
Study Lesson 3: Designing Samples and Experiments in the current edition of my book, if you have it, to prepare for this assignment. Note that, in older editions of my study book, this was Lesson 4.
You will need Table B to help answer some of the questions on this assignment. That is in the textbook or can be downloaded from the resources section of Stats Portal. Here is a link where you can download the table immediately, if you prefer:
Thankfully, there is no JMP needed for this stuff.
Question 1. Be sure to read my section teaching the different types of experimental design (after question 6 in Lesson 3 of my book) for some ideas on how to answer this question.
Question 4 can be frustrating because you don't know whether you are to describe what is definitely being done in your example, or what you also assume should be done. I recommend you first select the options you are certain have been done, and, if they mark you wrong, add other options that you think might have been done, and cross your fingers. Remember the three principles of experimental design while you answer this question: randomization, replication (or repetition), and control of outside factors. Note, if an experimenter does the same treatment at least twice, that is replication.
Question 5
They want two diagrams in this problem. A table that shows how you are determining the treatments (like my question 7(b) in Lesson 3) and then an arrow chart of the experiment.
Here is a link where you can download my Word document teaching my question 7(b). Perhaps you will find this helpful in making the charts your question requires:
To draw one of those arrow charts and upload it, there are many
ways to do it and it depends on how fancy you want to get and what
program you are using. A pretty simple way might be to insert a table
into your document (In Word, select Insert, and choose Table) and give
yourself lots of rows and columns to work with (I'd say at least 4
columns and 5 rows; you can always add extra rows if you need them by
just pressing the Tab button when your curser is in the last cell of the
last row). You could also use a spread sheet program like Excel.
Type in the various words you want in the approximate
positions throughout the table. To connect words together with arrows
insert arrows (in Word or Excel, select Insert, Shape, and select the Arrow).
You then use your mouse to click where you want the arrow to start and
where you want it to stop. Get rid of the lines on your table by
right-clicking your mouse while pointing anywhere in the table and
selecting Table Properties. Then, select Borders and Shading and select
None. Don't get rid of the lines until you have made your whole chart
since the lines will help you place your words throughout.
By the way, I show you how to make a table in
question 7 to identify the treatments needed for a two-factor
experiment. When you have a three-factor experiment, make a table for
just two of the factors first, then, give all of those treatments to the
first level of the third factor. You then give those exact same
treatments to the second level of the third factor, and so, until you
have used all the levels of the third factor. Make sure you number the treatments in each cell of your table, and if you have to make two or more table, use different treatment numbers for each cell.