Question

The following data gives the scores of 13 students in a Biostatistics exam. 75 80 28 70 95 82 75 64 61 90 81 65 91

a) Find the following statistical measures

1. Mean

2. Median

3. Mode

4. Range

5. 34th percentile

6. Interquartile Range

7. Variance

8. Standard deviation

9. Coefficient of variation.

b) (Without Calculations) If the instructor decide to add up 5 marks for every student, what are the values of the statistical measures mentioned in part (a).

c) Construct the Boxplot of students' scores, and identify any possible outliers.

Answer #1

The following data gives the scores of 13 students in a
Biostatistics exam. 75 80 28 70 95 82 75 64 61 90 81 65 91 a) Find
the following statistical measures 1. Mean 2. Median 3. Mode 4.
Range 5. 34th percentile 6. Interquartile Range 7. Variance 8.
Standard deviation PRINCIPLES OF STATISTICS Assignment (1) Due
Date: 15/7/2020 9. Coefficient of variation. b) (Without
Calculations) If the instructor decide to add up 5 marks for every
student, what are...

The following data set is a sample of student's scores on a
statistics exam: 89 33 20 87 61 64 60 66 47 27 87 Find the
following measures using the data above. a) Mean b) Median c) Mode
d) Range e) Variance f) Standard Deviation

Suppose a professor gives an exam to a class of 40
students and the scores are as follows. (Type the
data set in StatCrunch.)
35
44
46
47
47
48
49
51
53
54
55
55
57
57
57
58
59
59
59
59
60
60
60
60
60
62
62
62
64
68
69
70
72
73
73
75
75
77
82
88
a. Find each of the
following:
Mean:
Median:
Standard deviation:
Z-score for a student who...

suppose a data set consisting of exam scores has a lower
quartile Q1=60, a median m=75 and an upper quartile of Q3=85. the
scores on the exam range from 18 to 100. Without having the actual
scores available to you, which one of the following statements is
true?
a) the data set contains no suspected outliers
b) the data set contains suspected outliers only on its lower
end
c) the data set contains suspected outliers only on its upper
end...

. The following data represent the final exam scores of 18 male
students and 18
female students.
Male: 68, 68, 72, 73, 65, 74, 73, 72, 68, 65, 73, 66, 71, 68,
74, 66, 71, 65
Female: 59, 75, 70, 56, 66, 75, 68, 75, 62, 60, 73, 61, 75, 74,
58, 60, 73, 58
Is there any significant difference between the average exam
scores of male and
female students? Explain your answer.

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...

A statistics instructor wonders whether significant differences
exist in her students’ final exam scores in her three different
sections. She randomly selects the scores from 10 students in each
section. A portion of the data is shown in the accompanying table.
Assume exam scores are normally distributed.
Section 1
Section 2
Section 3
60
75
86
94
64
68
56
73
65
57
71
77
60
83
91
86
67
79
66
76
94
85
70
56
82
80
50...

The data file ExxamScores shows the 40 students
in a TOM 3010 course exxam scores for the Middtermm and Final
exxam. Is there statistically significant evidence to show that
students score lower on their final exxam than middtermm exxam?
Provide the p-value for this analysis.ROUND TO 4 DECIMAL
PLACES.
ExxamScores
Student ID #
Middtermmm
Final
56065
97
64
79499
95
85
59716
89
72
83504
79
64
77735
78
74
57760
87
93
78204
83
70
81177
94
79
54398...

The following scores represent a sample of final examination
grades for a statistics course
23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92
85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41
71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79
a) Compute the 20th percentile of...

A business statistics professor gives 100-point exams to two
different sections of business statistics. The scores in one
section, Section 001, of the class were 40, 50, 61, 63, 67, 74, 74,
76, 76, 78, 78, 80, 82, 86, 87, 87, 87, 88, 90, 90, 91, 92, 92, 93.
The other class, Section 002, had scores of 67, 67, 68, 75, 75, 76,
79, 79, 80, 80, 80, 83, 86, 87, 87, 88, 89, 89, 90, 90, 90,
91.
Based...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 7 minutes ago

asked 21 minutes ago

asked 28 minutes ago

asked 38 minutes ago

asked 39 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago