Find standard deviation for students on computer studies

Reference no: EM13138770

The 47 students on a computer studies course each recorded the number of whole minutes, x, spent surfing the internet during a given day. The results are summarised below:
∑x = 2276 , ∑x² = 111492

a) Find the mean μ.
b) Find the standard deviation SD = σx

Reference no: EM13138770

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