Questions+on+stuff

Post any questions you have about homework, projects, etc. you want answered or need help with here.

may 19- do we have to have the survey data in by thurs or fri. i wont be able to get my data in til friday. Pookie Can you get it in by Friday 9am? DrB yes i can

May 15-- Can anyone help me figure out how to start the worksheet titled Mystery Balancers? I understand the data is on the back, but how are we suppose to figure out which age group goes with each dot plot? Is it ok to just guess? (BS)

Well, use some reasoning given the age of the groups vs just guessing. Which group do you think best matches the dot plot and then support that with your logic. Does that help? Dr B

Not really, (haha) I just don't know how to decided the difference between a gymnasts's balance and a karate students's balance. I think they should have close to the same balance, even though the ages are different, with the right training anyone can be good at balancing. (I think I'm making this harder than it needs to be)

Yep, you are. There are only four dot plots so one has to match with each group. Use good reasoning and make your choice. The main point is to develop reasoning, to refer to how the data is distributed, and to know perhaps something about these different age groups. (Dr B)

When working on page 19, I took everything out to two decimal places (like we discussed in class). Then I came across the data provided by Mars Company, which was given in whole percents. Should we round up to the whole percent for this example? Or continue to take everything out two decimal places? (B.S.) -If it is exact then the rule is do not round, but if it is not an exact number then I think we are suppose to round to two decimal places making it approximately, so my suggestion is to not round to make it a whole percent because it is not exact. I am not sure on this either because I got tripped up by it as well, but I did not round up because to me it was not an exact number. (E.B)

-In science classes, you'll talk about significant figures or digits and how that determines how many digits you end up with in your final answer. Keep posting your solutions to two decimal places if not exact responses for now. But you raise a good point about what to do if original data is already an approximation. Dr B

For tonight's homework, making a display for the pulse data, how are people categorizing it? i guess i am just confused because with the eye color we had 3 groups and with the pulse data, it is a bunch of different numbers. (A.W.)

So what did you end up doing Amber?? Dr B

When my partner and I were looking over the raw data and we noticed that student 20 is not taking any Summer I classes... Seeing this are we really allowed to use their survey? We do not think so because we are focused on WMU undergraduate students who are taking classes during the Summer I semester and question three actually states this. I guess I am really asking what other groups thought of this and if they are using the information or not. (AK)

--Does anyone know which measure of center is the most appropriate to use when looking at a histogram???