Concept explainers
To find whether the graph below shows a positive, a negative, or no
Answer to Problem 38SGR
Weak
Explanation of Solution
Given information:The graph is shown below.
Where x- axis shows Hours Spend Studing and y -axis shows Test Scores.
Calculation:
In general, the test scores increase as the amount of time spent studying increases. The regression line for this datahas a positive slope and a correlation coefficient close to 0.5. Since 0.5 is not close to 1, the equation is not a good fitof the data. So, the graph shows a weak positive correlation. This means the more study, the better testscore is likely to be.
Chapter 4 Solutions
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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