Question

1. Consider the relation race. What is displayed by len( race ) •10 •3 •9 •4 2. Consider the relation race. Which code would display the number is runners from each country? •race["country"]. value_counts( ) •country.value_counts( ) •race["country"].info( ) •race.value_counts( ) 3. Which rows of data will be displayed by race.tail ( ) •last five rows of the table •first five rows of the table • first three rows of the table • last three rows of the table

Answer 1

1. The code `len(race)` will display the number of rows in the relation race.
2. The code `race["country"].value_counts()` will display the number of runners from each country.
3. The code `race.tail()` will display the last five rows of the table.