The Test Scores for a Statistics course are given in the Excel
below.
The data (X1,...
The Test Scores for a Statistics course are given in the Excel
below.
The data (X1, X2, X3, X4) are for each student.
X1 = score on exam #1
X2 = score on exam #2
X3 = score on exam #3
X4 = score on final exam
Your professor wants to know if all tests are created equal.
What is the F-Stat?
EXAM1
EXAM2
EXAM3
FINAL
73
80
75
65.86667
93
88
93
80.16667
89
91
90
78
96
98...
Using the accompanying Student Grades data, construct a scatter
chart for midterm versus final exam grades...
Using the accompanying Student Grades data, construct a scatter
chart for midterm versus final exam grades and add a linear
trendline. What is the model? If a student scores 7878 on the
midterm, what would you predict her grade on the final exam to
be?
Student
Midterm
Final Exam
1
75
64
2
85
91
3
80
68
4
88
83
5
76
60
6
67
80
7
78
74
8
95
94
9
67
61
10
93
87
11...
As part of its freshman orientation process, a college gives a
math placement exam to incoming...
As part of its freshman orientation process, a college gives a
math placement exam to incoming freshmen. The math department is
interested in whether there is a statistically significant
difference in the average exam score for students in different
programs, at a level of α=0.01 . The exam scores for random samples
of science, engineering, humanities, and business majors are shown
in the following table. The math department has confirmed that the
samples were randomly selected and independent, that the...
Make a relative frequency histogram using 6 classes; between
what two values could you expect to...
Make a relative frequency histogram using 6 classes; between
what two values could you expect to find 88.9% of the data,
according to Chebyshev.
Sample scores: 84, 67,80, 74, 81, 91, 95, 85, 82, 99, 77, 78,
88, 94, 82, 95, 71, 77, 91, 88, 96, 85, 70, 82, 88, 75, 90, 85, 89,
95, 85, 65, 86, 91