population variance and standard deviation

What is the initial step required to calculate the population variance and standard deviation for a given data set?

• Square each data value

• Find the sum of the squared deviations

• Calculate the mean of the data set

• Determine the square root of the variance

What does a larger standard deviation value imply about a data set?

• The data points are closer to the mean

• The data set has less variability

• The data points are more spread out from the mean

• The mean of the data set is higher

For the data set (8, 9, 13, 14, 6), what is the mean (μ)?

• 9

• 10

• 11

• 12

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What is the population variance (σ²) for the data set (8, 9, 13, 14, 6)?

• 46

• 9.2

• 3.03

• 5