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Mathematics 22 Online
OpenStudy (anonymous):

You suspect that the spiciness of food served in a restaurant is positively correlated with number of soft drinks ordered. You have gathered several observations of people ordering food of different spice-levels and the number of soft drinks they ordered. You have also plotted the data and found a line of best fit. What would be your next steps to test your hypothesis? Plot all data together on a dot plot to assess if there is any visible correlation between the data sets.

OpenStudy (anonymous):

Offer a conclusion based on the data you observed. Pick two points on the dot plot and find a line of best fit. Find the correlation coefficient to see how well the line of best fit actually fits the data.

OpenStudy (anonymous):

@mathmale

OpenStudy (mathmale):

If you're not sure how to answer this, start by eliminating the least likely (least good) answer. Be sure you can justify your decision to eliminate any particular answer.

OpenStudy (anonymous):

i think its d

OpenStudy (mathmale):

What do you mean by "I think it's D?" Do you mean that you think the answer is D or that D should be eliminated? And, in either case, why? I may as well make it clear now: I do not deal in "I think it's D" answers...I want to understand how you got your result and why you think it's correct.

OpenStudy (anonymous):

well i think the answer is d, because i took the test twice already and found out the other answers werent correct, i just wanted some extra help, but if its just to hard for you, you dont need to answer it.

OpenStudy (anonymous):

the other question i commented in, where you told me not to piggy back or whatever, that option was wrong. for that one you said "cool " to btw.

OpenStudy (mathmale):

I emphasize understanding of course material. I'm asking you to provide justification for your answers based upon subject-matter knowledge, not upon whether or not you "got it wrong" the last two times you took this test. Regardless of how I may have responded to someone else, I want YOUR reasoning and yours alone for either choosing D or eliminating D. Are you choosing D as your answer or are y ou eliminating it, and in either case, why?

OpenStudy (anonymous):

Becuase i got the others wrong, thats the only reason i have.

OpenStudy (mathmale):

that shows you're choosing D based on a guess more than you are choosing D based on understanding of the course material. In the end you'd most likely find that if you make the effort to understand the material, you'll be able to answer the questions correctly than if you guess repeatedly. Please indicate whether you are choosing D as your answer or whether you are eliminating D as a correct answer.

OpenStudy (anonymous):

i told you i was choosing d.

OpenStudy (anonymous):

and yes your very right, thats exacly how im choosing my answer.

OpenStudy (mathmale):

For what?

OpenStudy (mathmale):

You are choosing D as what?

OpenStudy (anonymous):

as my answer, ive said this three times now.

OpenStudy (mathmale):

As it happens, D is the correct answer. Here's what I wish you were explaining as rationale for choosing D over the other answers: " Finding the correlation coefficient to see how well the line of best fit actually fits the data is the best course of action, since that is the purpose of the correlation coefficient."

OpenStudy (mathmale):

I am sorry to sound "snappy" (as you put it), but it does become irritating for me, after a while, when students try so hard to guess the correct answer, or to chance upon it, rather than to learn the course material so as to be able to choose the correct answer based upon factual knowledge. While I have to get off the 'Net now, I'd welcome the opp to work with you again in the future. Good luck.

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