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Task $2$: Instructions

Implement the following data preprocessing tasks:

Delete unnecessary columns from df$\_$activities with the drop$()$ method, setting the columns parameter to the cols$\_$to$\_$drop list.

Calculate the activity type counts using the value$\_$counts$()$ method on the Type column.

Rename the 'Other' values to 'Unicycling' in the Type column using str$.$replace$().$

Count the missing values in each column using isnull$().$sum$().$