# What Is The Minimum Value Of The Sale Variable

Monday December 20, 2021

What is the minimum value of the sale variable? Note that the sale variable is in millions. The answers below are rounded to one decimal place. O -18,009.2 O -15,009.3 0 0.0 O 2.6 O None of the above. You want to create another data frame which contains a subset of the observations from the original North American Stock Market dataset. You are interested in retaining all the observations with assets greater than \$50 million (i.e., at > 50) which run from fiscal year (fyear) 1995 (inclusive) to 2005 (inclusive) Call this new dataframe: df The correct code to do this is (choose one of the following): Odf <- filter(companies,at > 50, fyear >= 1995, fyear <= 2005) Odf<- select(companies,at > 50, fyear >= 1995, fyear <= 2005) O df <- filter(companies,at > 50, fyear >= 1995, fyear <= 2005, na.rm = TRUE) Odf <- select(companies, at > 50, fyear >= 1995, fyear <= 2005, na.rm = TRUE) O None of the above. Now, create a new data frame by removing all the observations that contain any missing values (NA) in the North America Stock Market 1994-2018 dataset (that is, don't continue with the dataset you created in the previous question, rather, start again with the full 1994-2018 dataset. Call this new data frame: companies_complete Hint: This can easily be done by using na.omit function. If your original data frame is named as companies, then typing companies_complete <- na.omit(companies) would do the trick. Now, use the companies_complete data frame. Add a new column called x which is equal to 1 if the company is incorporated (i.e. fic) in Canada (i.e., "CAN"). The variable x is equal to 0 if the company is incorporated in the United States (i.e., "USA"), and x is equal to - 1 if the company is incorporated elsewhere (not in "CAN" or in "USA"). What is the mean value of x? (Answers are rounded to four decimal places) 0 -0.0080 O 0.1221 O 0.4524 O 0.6671 O 0.6767

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