Statistics Homework Solutions
#212356
A calculus instructor uses computer aided instruction and allows students to take the midterm exam
A calculus instructor uses computer aided instruction and allows students to take the midterm exam as many times as needed until a passing grade is obtained. Following is a record of the number of students in a class of 20 who took the test each number of times.
second
Students Number of tests
10 1
7 2
2 3
1 4
Compute the variance.
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