Consider the following data set that has a mean of 4: 2, 3, 4, 4, 7 Using the equation below or the standard deviation formula in Excel, calculate the standard deviation for this data set. Answer choices are rounded to the hundredths place. s equals square root of fraction numerator 1 over denominator n minus 1 end fraction sum from i equals 1 to n of open parentheses X subscript i minus X with bar on top close parentheses squared end root
a.) 1.87
b.) 2.12
c.) 3.51
d.) 1.37