Question
In: Statistics and Probability
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 70 on the midterm, what would you predict her grade on the final exam to be?
|
Student |
Midterm |
Final Exam |
|
|---|---|---|---|
|
1 |
7575 |
6464 |
|
|
2 |
8585 |
9090 |
|
|
3 |
8080 |
6969 |
|
|
4 |
8989 |
8484 |
|
|
5 |
7676 |
6161 |
|
|
6 |
6666 |
7878 |
|
|
7 |
7878 |
7272 |
|
|
8 |
9494 |
9494 |
|
|
9 |
6767 |
5959 |
|
|
10 |
9393 |
8686 |
|
|
11 |
7979 |
5353 |
|
|
12 |
8787 |
8484 |
|
|
13 |
8686 |
5555 |
|
|
14 |
6262 |
7373 |
|
|
15 |
9191 |
8686 |
|
|
16 |
7575 |
8888 |
|
|
17 |
6969 |
8181 |
|
|
18 |
9393 |
9595 |
|
|
19 |
7979 |
7878 |
|
|
20 |
6161 |
7070 |
|
|
21 |
6969 |
8383 |
|
|
22 |
7272 |
7373 |
|
|
23 |
6262 |
7474 |
|
|
24 |
6969 |
5555 |
|
|
25 |
7575 |
9494 |
|
|
26 |
7171 |
7878 |
|
|
27 |
9898 |
8989 |
|
|
28 |
5959 |
5353 |
|
|
29 |
8383 |
7777 |
|
|
30 |
7171 |
8181 |
|
|
31 |
7676 |
6969 |
|
|
32 |
9595 |
9797 |
|
|
33 |
7373 |
9292 |
|
|
34 |
7171 |
8080 |
|
|
35 |
7373 |
8282 |
|
|
36 |
9696 |
9595 |
|
|
37 |
7171 |
6262 |
|
|
38 |
9090 |
8383 |
|
|
39 |
9595 |
9696 |
|
|
40 |
8484 |
8888 |
|
|
41 |
6161 |
7373 |
|
|
42 |
6565 |
9393 |
|
|
43 |
9595 |
8383 |
|
|
44 |
8282 |
8888 |
|
|
45 |
8888 |
100100 |
|
|
46 |
9393 |
9696 |
|
|
47 |
7777 |
9191 |
|
|
48 |
8686 |
9393 |
|
|
49 |
9191 |
7878 |
|
|
50 |
7575 |
8383 |
|
|
51 |
9696 |
100100 |
|
|
52 |
7979 |
7272 |
|
|
53 |
6161 |
7878 |
|
|
54 |
6969 |
7676 |
|
|
55 |
8686 |
9191 |
|
|
56 |
8989 |
9494 |
|
|
Student |
Midterm |
Final Exam |
Solutions
orchestra answered 2 years agoRelated Solutions
Using python code Developed a program to get students homework, midterm, and final exam grades and...
Using python code
Developed a program to get students homework, midterm, and final
exam grades and compute their average grades display average grade
as a number and give them letter gardes. For this homework, I would
like you to modify your to do the following.
Student grades MUST be between 0 and 100. If students input any
number that is not in this range , program must keep asking to
enter the correct number. Once student input correct grade, program...
1. The following lists midterm and final exam grades for randomly selected students: Midterm (x) 82...
1. The following lists midterm and final exam grades for
randomly selected students:
Midterm (x) 82 65 93 70 85 50 95 80
Final (y) 94 77 94 79 95 70 97 91
a). Plot the scatter diagram.
b). find the value of the linear correlation coefficient r.
c). find the equation of the regression line that best fits the
data.
d). If you received a 76 on the midterm, what grade could you
expect on the final?
e). If...
An investigator collected data on midterm exam scores and final exam scores of elementary school students;...
An investigator collected data on midterm exam scores and
final exam scores of elementary school students; results can
summarized as follows.
Average SD
--------------------------------------------------
Boys' midterm score 70 20
Boys' final score 65 23
girls' midterm score 75 20
girls' final score 80 23
The correlation coefficient between midterm score and final
score for the boys was about 0.70; for the girls, it was about the
same. If you take the boys and the girls together, the correlation
between midterm...
An instructor grades exams, 20%; term paper, 30%; final exam, 50%. A student had grades of...
An instructor grades exams, 20%; term
paper, 30%; final exam, 50%. A student had grades
of
83, 72, and 90, respectively, for exams, term paper,
and
final exam. Find the student’s final average. Use
the
weighted mean.
Stories in the Tallest Buildings The number
of
stories in the 13 tallest buildings for two
different
cities is listed below. Which set of data is
more
variable?
Houston: 75, 71, 64, 56, 53, 55, 47, 55, 52, 50, 50, 50,
47
Pittsburgh:...
The following are the midterm exam grades (in %) of a simple random sample of 39...
The following are the midterm exam grades (in %) of a simple
random sample of 39 statistical students:
85 64 45 77 53 72 99 59 68 92 48 75 51 93 67 78 89 56 83 71 49
94 63 77 79 88 42 65 92 69 73 56 81 69 61 75 58 67 81
a). make a 75% confidence statement about the mean grade of all
statistical students on a similar midterm
b). what is the sample...
What is the percentage of shared variance between the midterm and final grades in the table...
What is the percentage
of shared variance between the midterm and final grades in the
table below?
Midterm
Final
55
100
60
80
78
92
79
95
80
90
55
90
64
40
89
75
90
70
92
82
94
70
100
100
13%
17%
25%
Less than 1%
The accompanying data represent the number of days absent, x, and the final exam score, y,...
The accompanying
data represent the number of days absent, x, and the final exam
score, y, for a sample of college students in a general education
course at a large state university. Complete parts (a) through (e)
below.
Click
the icon to view the absence count and final exam score
data.
Absences and Final
Exam Scores
No. of
absences, x
0
1
2
3
4
5
6
7
8
9
Final
exam
score,
y
88.3
87.3
84.2
80.9
77.6
73.8...
An instructor hypothesizes that the variance of the final exam grades in her statistics class is...
An instructor hypothesizes that the variance of the final exam
grades in her statistics class is larger for male students than it
is for female students. The data from the final exam for the last
semester are as shown. Is there enough evidence to support her
claim, using a .01 level of significance?
Males
females
n1=16
s1-4.2
n2=18
s2=2.3
claim ………………………………................ ________________________
null hypothesis…………………………………. ________________________
alternative hypothesis………………………….. ________________________
Calculator Screen Name……………………… ________________________
test statistic ………………………… ________________________
pvalue/alpha comparison………………………. ________________________...
For the accompanying data set, (a) draw a scatter diagram of the data, (b) by hand,...
For the accompanying data set, (a) draw a scatter diagram of
the data, (b) by hand, compute the correlation coefficient, and
(c) determine whether there is a linear relation between x and
y.
n
3
0.997
4
0.950
5
0.878
6
0.811
7
0.754
8
0.707
9
0.666
10
0.632
11
0.602
12
0.576
13
0.553
14
0.532
15
0.514
16
0.497
17
0.482
18
0.468
19
0.456
20
0.444
21
0.433
22
0.423
23
0.413
24
0.404
25
0.396...
For the accompanying data set, (a) draw a scatter diagram of the data, (b) by hand,...
For the accompanying data set, (a) draw a scatter diagram of
the data, (b) by hand, compute the correlation coefficient, and
(c) determine whether there is a linear relation between x and
y.
x 2 4 6 6 7
y 4 8 11 13 18
n
3
0.997
4
0.950
5
0.878
6
0.811
7
0.754
8
0.707
9
0.666
10
0.632
11
0.602
12
0.576
13
0.553
14
0.532
15
0.514
16
0.497
17
0.482
18
0.468
19
0.456...
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