Mathematics, 25.02.2020 21:53 dudeguy3593
Are the marks one receives in a course related to the amount of time spent studying the subject? To analyze this mysterious possibility, a student took a random sample of 10 students who had enrolled in an accounting class last semester. He asked each to report his or her mark in the course and the total number of hours spent studying accounting. These data are listed here.
Marks
Time Spent Studying
77
40
63
42
79
37
86
47
51
25
78
44
83
41
90
48
65
35
47
28
Enlarge Table
a.
Calculate the covariance.
b.
Calculate the coefficient of correlation.
c.
What do the statistics calculated above tell you about the relationship between marks and study time?
A. First, do the calculations for covariance and coefficient of correlation using only Excel's add/Sum, subtract, multiply, divide functions (OK, use ^2 (to square a number) )
B. Then calculate the covariance and coefficient of correlation using Excel's CORREL and COVAR functions
C. What do the statistics calculated above tell you about the relationship between marks and study time?
Answers: 1
Mathematics, 21.06.2019 17:00
The equation of a circle is (x + 4)2 + (y + 6)2 = 16. determine the length of the radius. 10 4 16 8 my flower basket delivers flowers within a 20 mile radius of their store. if this area is represented graphically, with my flower basket located at (5, 2), what is the equation that represents the delivery area? (x - 2)2 + (y - 5)2 = 20 (x - 5)2 + (y - 2)2 = 20 (x + 5)2 + (y + 2)2 = 400 (x - 5)2 + (y - 2)2 = 400
Answers: 1
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Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?
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Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)
Answers: 2
Mathematics, 22.06.2019 03:20
Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?
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Are the marks one receives in a course related to the amount of time spent studying the subject? To...
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