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Question

Twelve points are plotted in a scattered increasing curved pattern in the first quadrant of a coordinate plane with x and y axes. The x-axis is labeled as Time Spent Studying and y-axis as Scores on a Test.

Based on the data, which of the following choices would be the best estimated correlation coefficient?

(1 point)
Responses

0.98
0.98

−0.98
negative 0.98

1
1

0.75
0.75
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Answer 1

Based on the description of the points being plotted in a scattered increasing curved pattern, the best estimated correlation coefficient would likely be close to 1. This indicates a strong positive relationship between the two variables, "Time Spent Studying" and "Scores on a Test."

Since 1 indicates a perfect positive correlation and 0.98 indicates a very strong positive correlation, either of these options could be reasonable. However, given that the relationship is described as "curved," it suggests that the correlation isn't perfectly linear. Hence, the best choice based on your description would be 0.98.

Therefore, the best estimated correlation coefficient is:

0.98