An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part andY = the number of points earned on the second part. The accompanying table shows the number of students who obtained the indicated points for X (rows) and Y (column). The class is composed of 100 students.
An instructor has given a short quiz consisting of two parts. For a randomly selected student, let X = the number of points earned on the first part andY = the number of points earned on the second part. The accompanying table shows the number of students who obtained the indicated points for X (rows) and Y (column). The class is composed of 100 students.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 67E
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Transcribed Image Text:An instructor has given a short quiz consisting of two parts. For a randomly selected student, let
X = the number of points earned on the first part and Y
= the number of points earned on the
%3D
second part. The accompanying table shows the number of students who obtained the indicated
points for X (rows) and Y (column). The class is composed of 100 students.
Y
10
15
2
6.
2
10
4
15
20
10
10
1
15
14
Compute the covariance between the scores of students from the two parts of the quiz.
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