Mrs. donley's math class has a total of 25 students. on friday, the class was given an eight question quiz on fractions. the number of incorrect answers given by the students is shown below.

incorrect answers number of students
0 5
1 7
2 4
3 6
4 2
5 1

what is the relative frequency of students that missed 1 question on the quiz?

a. 0.28
b. 0.48
c. 0.35

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0