The mean of a set of numbers is the sum divided by the number of terms.
Divide by .
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.
Step 2
Convert to a decimal value.
Step 3
Set up the formula for samplestandard deviation. The standard deviation of a set of values is a measure of the spread of its values.
Step 4
Set up the formula for standard deviation for this set of numbers.
Step 5
Simplify the result.
Subtract from .
The expression contains a division by . The expression is undefined.
Undefined
Step 6
The standard deviation should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.