Question: (1) Define and explain a correlation coefficient. Explain the difference between positive and negative correlation. (2) Describe each of the following methods AND explain the

(1) Define and explain a correlation coefficient. Explain the difference between positive and negative correlation.

(2) Describe each of the following methods AND explain the advantages and disadvantages of each: (1) Naturalistic observation, (2) Experimental, (3) Longitudinal, and (4) Cross-sectional.

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