Explore BrainMass
Share

# Describe range, variance, standard deviation and calculate values

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

Given the following raw scores, calculate the following values, show your calculations:

Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3
a. Range _____________________
b. Variance ____________________
c. Standard Deviation _____________________

Describe each of the following statistical terms, and where applicable, define with the appropriate equation:

a. Range _______________________________________________
b. Variance _____________________________________________
c. Standard Deviation ______________________________________

https://brainmass.com/statistics/range/describe-range-variance-standard-deviation-calculate-value-333880

#### Solution Preview

For more details see the attached file.

a) Range: Largest - Smallest = 9 - 3 = 6

b) Variance = (Sum of the squares of the observations/ No. of observations) - ( Mean)2,
Where Mean = Sum of the observations / No. of observations
Sum = 77
Mean = ...

#### Solution Summary

The expert describes the range, variance, standard deviation and calculate values.

\$2.19