# Basic Statistical Concepts

1. In words, explain what is measured by each of the

a. SS

b. Variance

c. Standard Deviation

2. A population has u=100 & sigma=20. If you select a single score from this population, on the average, how close would it be to the population mean? Explain your answer

3. Can SS ever have a value less than zero? Explain your answer

4. What does it mean for a sample to have a standard deviation of zero? Describe the scores in such a sample.

5. What does it mean for a sample to have a standard deviation of s=5? Describe the scores in such a sample. (describe where the scores are located relative to the sample mean)

https://brainmass.com/statistics/dispersion-and-spread-of-data/basic-statistical-concepts-122488

#### Solution Summary

This solution explains the statistical concepts of Sum of Squares (SS) , variance, standard deviation and explains how to find a population mean. It also discusses how to find sum of squares and standard deviation.