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In: Psychology

Correlational Research A)Strength of correlation: correlation coefficient Explain what it is. Use an example. The statistic...

Correlational Research

A)Strength of correlation: correlation coefficient Explain what it is. Use an example.

The statistic has a value from 0 to 1: 0 = no relationship between 2 variables > .3, a significant relationship > .5, a strong relationship

b)Weakness of correlational research Explain how correlational research only describes relationships between variables. It can’t be used to test for cause and effect. Correlation doesn’t imply causation, only co-occurrence.

Solutions

Expert Solution

The correlation coefficient is a measure of the strength and direction of the linear relationship between two variables. Correlation coefficient formulas are used to find how strong a relationship is between data. The formulas return a value between -1 and 1, where:

  • 1 indicates a strong positive relationship. This means that for every positive increase in one variable, there is a positive increase of a fixed proportion in the other. For example, clothes sizes go up in a positive correlation with body weight.
  • -1 indicates a strong negative relationship. This means that for every positive increase in one variable, there is a negative decrease of a fixed proportion in the other. For example, the sale of winter clothes decreases in correlation with temperature.
  • A result of zero indicates no relationship at all. This means that for every increase, there no positive or negative increase is observed. The two variables share no relationship.

Please post the other questions separately as we are supposed to answer just one question or four subparts of the same question.

Hayet Jeridi answered 4 months ago
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