Question 1Suppose the data (known as raw data hereafter) collected for Q4 and Q5 include missing responses (less than 10% of total cases). The raw data needs to be treated before it is suitable for data analysis. Discuss one suitable option to treat the raw data for Q4 and Q5. Question 2You are given a TMA data file for Case 1.1 in the textbook. Read the case on the definitions of the data fields.
(a)Create more concise categorisations of the following variables. i.Recode q6: “If you could make your computer purchase decision again, how likely would you be to choose Dell? into a new column by keeping “1”, “2” as they are, and merging “3” & “4” as “3”. Rename the new column as “q6_Recoded”. ii.Recode q9_5per: “If the price of the Dell computer system you purchase had been 5% higher, and all other personal computer price had been the same, how likely would you have been to have purchased your Dell computer system?” into a new column by merging “1” & “2” as “1”, rename “3” as “2”, and merging “4” & “5” as “3”. Rename the new column as “q9_5per_Recoded”. You must change the two recoded variables and q4’s Data Type to Character, and Modelling Type to Nominal under Column Info to suit the analysis later. Present the recorded variables’ Frequency Distribution Table. Comment on the distributions. Note: You are not required to show the lists of recoded data.
(b)Examine the relationships between the variables by a two-way cross-tabulation for q9_5per_Recoded as Y, and q6_Recoded as X. Present the relevant JMP outputs, including Mosaic Plot. Observe and interpret the data trend in each category.
(c)Compute a three-way cross-tabulation for the same variables in Q2(b) with Q4 introduced as the grouping variable. Present your results for the cross-tabulation tables and compare the results for the very satisfied customers (Q4=1) with those from the two-way cross-tabulation. Finally, make recommendations to Dell’s management.
Read less
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more