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4 cards from this section. Quick, good the night before a test.
Define the correlation coefficient.
Think about how it helps in understanding relationships.
What is the range of values for the correlation coefficient?
Remember: extremes give you information about positive and negative relationships.
What does a correlation coefficient of +1 indicate?
Think about how the two variables move together.
True or False: A correlation coefficient can ever be greater than 1.
Recall the definition of how correlation works.
You are given the following data about weekly hours of exercise and the pounds lost over a month: Hours: [2, 3, 4, 5], Pounds Lost: [1, 1.5, 3, 4]. Calculate the correlation coefficient and explain its significance.
Keep your calculations organized for better clarity.
Given a set of grouped data for height (in cm) and average scores in mathematics, how would you calculate the correlation coefficient, and what factors would affect your analysis?
Consider how the frequencies are represented and calculated!
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