Calculating Standard Deviation from Displayed Data

A research study was conducted to examine the daily screen time of students in a middle school. The results from a sample of 12 students (in hours) are as follows:

2, 3, 5, 7, 8, 6, 4, 9, 10, 3, 5, 7

Based on the data collected, what is the standard deviation of the daily screen time for these students? Use the following formula for standard deviation:

$$ ext{Standard Deviation} = ext{sqrt}igg(\frac{ ext{Sum of squared deviations from the mean}}{N}igg) $$