Measures of spread include the range, variance and standard deviation.

Find the range of the data set.

Range is the difference between highest and lowest observed values.

Highest value in the data set is $\"\"$ .

Lowest value in the data set is $\"\"$ .

Range $\"\"$ .

Find the variance $\"\"$ .

Variance is the average of the squared difference from the mean.

Calculate the Mean of the data set.

$\"\"$

Find the standard deviation $\"\"$ .

Standard deviation is the square root of the variance.

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Range $\"\"$ , variance $\"\"$ and standard deviation $\"\"$ .