Concept explainers
To find: the best equation which represents the data in the table.
Answer to Problem 19PFA
The correct approximate equation is
Explanation of Solution
Given information:
Given table,
Given options are,
A.
B.
C.
D.
Calculation:
Given the table of the values Study hours (h) = 0, 1, 2, 3, 4, 5, 6,
Exam score (s) = 55, 70, 83, 76, 87, 92, 90
Sum of the exam score (s) | Sum of the Study hours (h) mean | Sum of the exam score (s) mean | Product of (sum of study hours (h) mean)(sum of the exam score (s)mean) | (study hours(h) mean) |
55 | | | | |
70 | | | | |
83 | | | | |
76 | | | | |
87 | | | | |
92 | | | | |
90 | | | | |
Sum = 553 | Sum of product = 153 | Sum = 28 | ||
Mean = (553/7)=79 |
Regression equation
Now,
Now,
And then,
Therefore, the correct approximate equation is
Chapter 4 Solutions
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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