1)
for class A
mean = ΣX/n = 70.882
Median=0.5(n+1)th value = 9 th value of
sorted data
= 71.0000
mode= 71
-------------------------------
for class B
mean = ΣX/n = 64.389
Median=0.5(n+1)th value = 9.5 th value
of sorted data
= 71.0000
mode= 80
2)
for class A
X | (X - X̄)² |
71 | 0.014 |
82 | 123.602 |
55 | 252.249 |
76 | 26.190 |
66 | 23.837 |
71 | 0.014 |
90 | 365.484 |
84 | 172.1 |
95 | 581.661 |
64 | 47.367 |
71 | 0.014 |
70 | 0.779 |
73 | 4.484 |
45 | 669.90 |
73 | 4.484 |
51 | 395.308 |
68 | 8.308 |
X | (X - X̄)² | |
total sum | 1205 | 2675.765 |
n | 17 | 17 |
sample variance = Σ(X - X̄)²/(n-1)=
167.2353
sample std dev = √ [ Σ(X - X̄)²/(n-1)] =
12.9319
--------------------------
for class B
X | (X - X̄)² |
54 | 107.929 |
80 | 243.707 |
12 | 2744.596 |
61 | 11.485 |
73 | 74.151 |
69 | 21.262 |
92 | 762.373 |
81 | 275.9 |
80 | 243.707 |
61 | 11.485 |
75 | 112.596 |
74 | 92.373 |
15 | 2439.262 |
44 | 415.71 |
91 | 708.151 |
63 | 1.929 |
50 | 207.040 |
84 | 384.596 |
X | (X - X̄)² | |
total sum | 1159 | 8858.278 |
n | 18 | 18 |
sample variance = Σ(X - X̄)²/(n-1)=
521.0752
sample std dev = √ [ Σ(X - X̄)²/(n-1)] =
22.8271
3)
for class A
quartile , Q1 = 0.25(n+1)th value= 4.5
th value of sorted data
= 65
Quartile , Q3 = 0.75(n+1)th value= 13.5 th
value of sorted data
= 79
maximum = 95
minimum= 45
five number summary for class A is 45,65,71,79,95
------------------------
for class B
Median=0.5(n+1)th value = 9.5 th value
of sorted data
= 71.0000
quartile , Q1 = 0.25(n+1)th value= 4.75 th
value of sorted data
= 53
Quartile , Q3 = 0.75(n+1)th value= 14.25 th
value of sorted data
= 80.25
IQR = Q3-Q1 = 27.25
five number summary is 15,53,71,80.25,92
---------------------------------------------------------------------------------------------------------------------------------------------------------
4)
Course Home Support Portal ation Assessment Content Assignments The marks for Dr. Smiths?s third-...
Content Course Home Support Portal Communication Assessment Assignments The marks for Dr. Smiths?s third-year classes in zoology are given below: ClassA 171182155|76 160171 190184|95|64171 170173|45 73|51168 Class B 54 80 12 61 73 69 92 81 80 61 75 74 15 44 91 63 50 84 1. Determine the three measures of central tendency 2 Calculate the variance and standard deviation 3. Determine the five figure summary and the interquartile range. 4. Create a box plot for each class. 5....
For the take-home portion of the exam, you will be analyzing the dataset titled "Testscores", found on the Content page. This dataset lists the scores for two different classes who were both given a similar test. Using this data, answer the following 5 questions, each worth 10 points 1. Calculate a 95% confidence interval for the mean score in each class, What conclusions can we draw from this? 2. Calculate a 95% confidence interval for the difference between the two...
(9 marks) 6) The data below shows the mass of 40 students in class. The measurement is the nearest kg. 55 70 57 73 55 64 60 48 59 72 58 54 69 51 63 78 75 64 65 57 71 78 76 62 66 62 61 53 67 49 76 63 63 76 52 76 71 61 56 71 A) Construct a frequency distribution table with 7 classes for the data given above? B) Draw the histogram for the...
Student stress at final exam time comes partly from the uncertainty of grades and the consequences of those grades. Can knowledge of a midterm grade be used to predict a final exam grade? A random sample of 200 BCOM students from recent years was taken and their percentage grades on assignments, midterm exam, and final exam were recorded. Let’s examine the ability of midterm and assignment grades to predict final exam grades. The data are shown here: Assignment Midterm FinalExam...
== Programming Assignment == For this assignment you will write a program that controls a set of rovers and sends them commands to navigate on the Martian surface where they take samples. Each rover performs several missions and each mission follows the same sequence: deploy, perform one or more moves and scans, then return to base and report the results. While on a mission each rover needs to remember the scan results, in the same order as they were taken,...
ALL WORK DONE IN EXCEL, SHOW SCREENSHOT. MATLAB!! BELOW IS SOAP BOX 1 100.2738 2 101.6089 3 97.3934 4 100.608 5 100.0483 6 98.3731 7 99.2734 8 100.0729 9 103.4057 10 102.5725 11 98.3296 12 102.846 13 100.4672 14 99.6551 15 100.4562 16 99.5089 17 99.5921 18 101.2544 19 101.1713 20 101.1797 21 100.4116 22 98.4763 23 100.4588 24 101.3991 25 100.2236 26 100.7857 27 100.4687 28 99.4075 29 100.0227 30 98.9091 31 100.635 32 98.5385 33 98.6191 34 98.8862...
This course is actually Quantitative Methods and Analysis In Unit 2, you have learned about three different types of distributions: Normal, binomial, and Poisson. You can take data that you collect and plot it out onto graphs to see a visual representation of the data. By simply looking at data on a graph, you can tell a lot about how related your observed data are and if they fit into a normal distribution. For this submission, you will be given...
Declare and initialize 4 Constants for the course category weights: The weight of Homework will be 15% The weight of Tests will be 35% The weight of the Mid term will be 20% The weight of the Fin al will be 30% Remember to name your Constants according to Java standards. Declare a variable to store the input for the number of homework scores and use a Scanner method to read the value from the Console. Declare two variables: one...
We are interested in the relationship between the compensation of Chief Executive Officers (CEO) of firms and the return on equity of their respective firm, using the dataset below. The variable salary shows the annual salary of a CEO in thousands of dollars, so that y = 150 indicates a salary of $150,000. Similarly, the variable ROE represents the average return on equity (ROE)for the CEO’s firm for the previous three years. A ROE of 20 indicates an average return...
Home Insert Draw Page Layout Formulas Data Review View Help Tell me what you want to do = = ). General Calibri B I 11 . Font - A A . .A. Wrap Text Merge & Center. U $ . % * 3 Alignment Number Clipboard R14 4. A . B C D G H nter the last 4 digits of your student ID number 4 Name/s: 7 Save this file in EXCEL FORMAT as: P2 Lastname 8 Round all...