The following table of values compares national test scores to high school GPA at a certain school.

National Test Score HS GPA
2350 3.95
1900 3.20
1825 2.00
2270 3.00
500 1.50
2000 4.00
1550 2.50
1030 1.17
1665 2.85
1380 2.25
2220 3.60

Using the equation for the line of best fit, what is the best prediction of the high school GPA for a person with a national test score of 1850? Show your work.

A. 2.20
B. 3.15
C. 3.85
D. 1.90

3 answers

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A scientist calculated the mean and standard deviation of a data set to be mc026-1.jpg and mc026-2.jpg. She then found that she was missing one data value from the set. She knows that the missing data value was exactly 3 standard deviations away from the mean. What was the missing data value?
A: 2.20