Why do you compute a z-score? And How?

What is a z-distribution?

How do you determine the relative frequency of a z-score using a normal curve and z-table?

What is the Standard Error of the Mean?

What is probability?

1. Posted from the CPSS survey, identify your group's list of scores (e.g. 7+15+12+20=54)?

2. What is your individual CPSS score?

3. What is the N (Count of the participant scores)?

4. Calculate the Sample Mean.

5. Calculate the Sample Variance.

6. Calculate the Sample Standard Deviation, what is the result ?

7. Use your own individual CPSS score and transform it into a z-score. Calculate your z-score, what is the result ((XX)SX=zscore)?

*8. Explain the "relative standing" or position of your z-score result compared to the "mean" (i.e. the group average)? Make two comments using some of the language in the *note below.

- "What is true for your z-score is also true for your raw score! "

*NOTE: It is important that you accurately interpret statistical results (z-score, t-score, etc.). Common statistical language used and questions to ask yourself when interpreting or comparing your z-scores:

Positive or negative result?

Below or above the mean?

1, 2, or 3 (more or less) standard deviations away from mean or another score?

Low frequency or high frequency (low freq=greater or larger than +/-1 std deviations)?

Extreme low or high score (extreme=greater or larger than +/-2 std deviations)?

2nd, 16th, 50th, 84th, 98th (closest to) percentile?

Within (relative frequency) 34%, 48%, 68% or 95% of scores?