The class test scores from the Unit test are the follow: 82, 72, 67, 80, 58, 92, 78, 80, 75, and 76. What is the mean of these test scores?

Find the standard deviation by completing the chart like we did in class: (You will not need to round)
Data

82:

72:

67:

80:

58:

92:

78:

80:

75:

76:


Data - Mean
The sum of the data from column 3 is:


The standard deviation of the data rounded two decimal places is:
(Data - Mean)