Variable	Mean	N	Std Dev
Col 1	12.96	500	2.8618
Col 2	13.039	500	2.9130
Col 3	12.9774	500	3.0232
Col 4	12.9616	500	2.8984
Col 5	13.2682	500	2.8858
Col 6 (means)	13.04124	500	1.2502

1) What is the relationship between the mean of each of the 5 columns of raw data and the mean of the distribution of means (6^th column)?

2) What is the relationship between the standard deviation of each column of data and the standard deviation of the distribution of means? Be as quantitative as possible in your answer (is there an equation that approximately describes the relationship?).