To compare textbook prices at the two most popular online booksellers, a Statist
ID: 2921879 • Letter: T
Question
To compare textbook prices at the two most popular online booksellers, a Statistics student gathered information about 14 college textbooks from Amazon.com and bn.com on November 25, 2006. For each book, she recorded the name of the principal author, the title, the ISBN, the Amazon selling price (in dollars) and the B&N selling price (in dollars). A scatterplot of ISBN vs. Amazon price for these textbooks is shown below. Is it appropriate to compute the correlation for these two variables? Indicate below whether or not each condition has been satisfied. Quantitative Variables Condition: (This means that both variables are quantitative.) Yes, the condition appears to be satisfied. No, it appears that the condition is not satisfied. Not enough information is provided. Straight Enough Condition: (This means that the data appears to have a linear association.) Yes, the condition appears to be satisfied. No, it appears that the condition is not satisfied. Not enough information is provided. Outlier Condition: (This means that there are not any outliers.) Yes, the condition appears to be satisfied. No, it appears that the condition is not satisfied. Not enough information is provided.
ri 140 n 120 i 100 150000000 450000000 ISBNExplanation / Answer
In this problem, X axis shows ISBNof the book which is a qualitative data and on Y axis, book price us given which is quantitative. Therefore , it is not appropriate to calculate correlation for these two variables.
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