(Answered) 1 calculate the standard deviation by hand of the following

Statistics

1. Calculate the standard deviation by hand of the following set of data. You must show all work to receive credit. Round to 2 decimal places.

75, 80, 65, 90, 85

2. Using the below frequency table calculate an estimated mean. Show all work

Grade Frequency

70-74 1

75-79 3

80-84 5

85-89 7

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