The bar chart shows the number of students with each letter grade in a certain professor's math classes. Since students need at
least a C for the grade to transfer, the professor groups all grades that are less than C into one category instead of grouping D's and F's separately.
How many fewer students have less than C's than have C's?
A 212
B 612
C 123
D 89
How many fewer students have less than C's than have C's?
A 212
B 612
C 123
D 89
2 answers:
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Using the given data you can build the linear regression (described by linear function y=ax+b) by hand or you can use math calculator to do this. In attached diagram you can see that
and
Then the equation of linear function is
Answer: correct choice is D.
