An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students.

See Attached Excel for Data.

final grade data.xlsx

The standard deviation of final grades for the face-to-face class is

Use the information to respond to the following question: (round to 2 decimal places)

Use the Excel function to find the Sample SD