A quality engineer analyzed the paint job on the Lexus IS350

A quality engineer analyzed the paint job on the Lexus IS350 model at the Toyota plant in Woodstock. 250 cars were analyzed. The drying time (in hours) and colour of paint were recorded. (i) identify the variable(s) in the study, (ii) explain the type of data for each variable in the study (e.g., univariate, bivariate, categorical and ordinal or non-cardinal, numerical and continuous or discrete, etc.), (iii) identify the observational unit, and (iv) determine the sample size.

Solution

(i) identify the variable(s) in the study

paint job

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(ii) explain the type of data for each variable in the study (e.g., univariate, bivariate, categorical and ordinal or non-cardinal, numerical and continuous or discrete, etc.)

categorical because it is just labels.

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(iii) identify the observational unit, and

car

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(iv) determine the sample size.

sample size= 250