Question
In: Statistics and Probability
Using the scores of 30 students on a statistics test determine the range. 75 52 80...
Using the scores of 30 students on a statistics test determine the range. 75 52 80 96 65 79 71 87 93 95 69 72 81 61 76 86 79 68 50 92 83 84 77 64 71 87 72 92 57 98
Solutions
Expert Solution
the give data is
75 52 80 96 65 79 71 87 93 95 69 72 81 61 76 86 79 68 50 92 83 84 77 64 71 87 72 92 57 98
Range is the spread of observations in terms of distance between the Values of Selected observations.
Range is the difference between two extreme observations as
Range= Xmax-Xmin
Step1- arrange all observations in ascending order
50,52,57,61,64,65,68,69,71,71,72,72,75,76,77,79,80,81,83,84,86,87,87,92,92,93,95,96,98
STEP 2 Find maximum and minimum observation
Max or Xmax=98
Min or Xmin= 50
Step 3 Use formula to find range
Range = 98-50
=48
hence Range=48
Hope you like the solution. Thank you
orchestra answered 2 years agoRelated Solutions
Test scores on a recent statistics test are listed below. 80 79 92 75 88 35...
Test scores on a recent statistics test are listed below.
80 79 92 75 88 35 98 91 90 81 32 50 59 66 68 95 42 18
a) Find the mean and median of the data set.
b) Find the standard deviation and the range
c) Find the five number summary for the data.
d) Construct a box plot for the data.
e) Are there any outliers? Justify your answer.
f) Describe the distribution of the data.
g) Which...
AM -vs- PM Test Scores: In my PM section of statistics there are 30 students. The...
AM -vs- PM Test Scores: In my PM section of
statistics there are 30 students. The scores of Test 1 are given in
the table below. The results are ordered lowest to highest to aid
in answering the following questions.
index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
score
44
48
50
52
55
60
61
64
64
65
66
67
68
71
75
index
16
17
18
19
20
21
22...
AM -vs- PM Test Scores: In my PM section of statistics there are 30 students. The...
AM -vs- PM Test Scores: In my PM section of
statistics there are 30 students. The scores of Test 1 are given in
the table below. The results are ordered lowest to highest to aid
in answering the following questions.
index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
score
43
48
50
52
55
60
61
61
64
65
66
67
68
71
75
index
16
17
18
19
20
21
22...
Scores of students in a large Statistics class are normally distributed with a mean of 75...
Scores of students in a large Statistics class are normally
distributed with a mean of 75 points and a standard deviation of 5
points.
Find the probability that a student scores more than 80
points
If 100 students are picked at random, how many do you expect to
score below 70 points?
If top 10% of students obtain an A grade, how much should a
student obtain to get an A grade.
Suppose four students are picked at random, find...
The scores on a statistics test are Normally distributed with parameters µ = 75 and σ...
The scores on a statistics test are Normally distributed with
parameters µ = 75 and σ = 10.
Find the probability that a randomly chosen score is
(a) no greater than 60
(b) at least 90
(c) between 60 and 90
(d) between 65 and 85
(e) at least 75
The following are final exam scores for 30 students in an elementary statistics class.
The following are final exam scores for 30 students in an
elementary statistics class.
91
59
82
91
79
76
90
69
77
83
59
88
95
72
88
81
77
52
80
96
62
97
76
75
75
89
61
72
90
85
a.
Find the quartiles for this data______________________________.
b.
What is the Interquartile Range (IQR)_________________________?
c.
What percent of students got at least a 72 on their final
exam______________?
d.
Build a boxplot using the graphing calculator.
Write a C++ program that reads a file consisting of students’ test scores in the range...
Write a C++ program that reads a file consisting of students’
test scores
in the range 0–200. It should then determine the number of
students
having scores in each of the following ranges: 0–24, 25–49,
50–74,
75–99, 100–124, 125–149, 150–174, and 175–200. Output the
score ranges and the number of students. (Run your program with
the
following input data: 76, 89, 150, 135, 200, 76, 12, 100, 150,
28,
178, 189, 167, 200, 175, 150, 87, 99, 129, 149, 176,...
The Test results of the Business Statistics were published and the scores were as followed Students...
The Test results of the Business Statistics were published and
the scores were as followed
Students 12 14 10 13 17 12 11 15
Results 5 11 7 8 11 7 6 9
Only 2 decimal places
Determine the α (alpha) Coefficient in the regression equation
*
4 points
Your answer
Advise if increasing the number of students to 50 will improve
the students’ test scores *
2 points
Remain the same
Increase
Decrease
Determine the β Coefficient in the...
For 5 students, scores on a math test (X) and statistics (Y) are given as follows:...
For 5 students, scores on a math test (X) and statistics (Y) are
given as follows:
X: 95 85 80 70 55
Y: 85 75 70 75 65
a) Fit the regression line
b) Test the model
c) Find the 90% Confidence Interval?
d) For a student who has a math score 75, estimate her/his
statistics grade?
For 5 students, scores on a math test (X) and statistics (Y) are given as follows:...
For 5 students, scores on a math test (X) and statistics (Y) are
given as follows:
X: 95 85 80 70 55
Y: 85 75 70 75 65
a) Fit the regression line b) Test the model c) Find the 90%
Confidence Interval? d) For a student who has a math score 75,
estimate her/his statistics grade?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Hello I need a small fix in my program. I need to display the youngest student...
- Iterative Merge Sort is not working #include #include #include int* b; void merge(int a[], int left,...
- 1 Please answer the following: a) Rank the following storage systems from slowest to fastest: a....
- Write a Python program that reads in an amount in cents and prints the dollar amount...
- Suppose you want your daughter’s college fund to contain $125,000 after 14 years. If you can...
- an investment pays 2600 per year for the first 7 years, 5200 per year for the...
- Portsmouth Company makes upholstered furniture. Its only variable cost is direct materials. The demand for the...
ADVERTISEMENT