Assignment 2 Due Date: 29 August, 2017 Weighting: 20% Full Marks: 100 STA2300 Data Analysis S2, 2017 • Answering the questions in this assignment should not be your first attempt at these types of...

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Assignment 2
Due Date: 29 August, 2017 Weighting: 20% Full Marks: 100
STA2300 Data Analysis S2, 2017
• Answering the questions in this assignment should not be your first attempt at these types of questions. It is essential that you work through practice exercises from the tutorial sheets in the study book and text book first.
• This assignment is important in assessing your understanding of the materials and receiving feedback that should be helping you to establish competency in essential skills.
• Answer all the questions. The questions are not of equal weight; some questions are worth much more than others. • The questions relate to material in Modules 1 to 6. • Before starting this assignment read Notes Concerning Assignments under the Introductory Material link on the StudyDesk. • When you are asked to comment on a finding, usually a short paragraph is required.
• Do not copy/paste SPSS output into your assignment unless specifically asked to do so. In many cases the SPSS output contains much more information than is required for a correct and complete answer. In those cases just reproducing the output may not attract any marks. . You must write relevant information in the SPSS output within the text of your answer. Make sure you report only the information from the SPSS output relevant to your answer.
• In order to obtain full marks for any question you must show all working. It is recommended that you show your working, rather than writing the final answer.
• Convert your word document to pdf before online submission. See the Introductory Material (Section 5, Assignments) for information about how to do this properly.
• This assessment item consists of 7 questions.
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STA2300 Data Analysis S2, 2017 Assignment 2 Due Date: 29 August, 2017 Weighting: 20% Full Marks: 100 ? Answering the questions in this assignment should not be your first attempt at these types of questions. It is essential that you work through practice exercises from the tutorial sheets in the study book and text book first. ? This assignment is important in assessing your understanding of the materials and receiving feedback that should be helping you to establish competency in essential skills. ? Answer all the questions. The questions are not of equal weight; some questions are worth much more than others. ? The questions relate to material in Modules 1 to 6. ? Before starting this assignment read Notes Concerning Assignments under the Introductory Material link on the StudyDesk. ? When you are asked to comment on a finding, usually a short paragraph is required. ? Do not copy/paste SPSS output into your assignment unless specifically asked to do so. In many cases the SPSS output contains much more information than is required for a correct and complete answer. In those cases just reproducing the output may not attract any marks. . You must write relevant information in the SPSS output within the text of your answer. Make sure you report only the information from the SPSS output relevant to your answer. ? In order to obtain full marks for any question you must show all working. It is recommended that you show your working, rather than writing the final answer. ? Convert your word document to pdf before online submission. See the Introductory Material (Section 5, Assignments) for information about how to do this properly. ? This assessment item consists of 7 questions. 1STA2300 Data Analysis S2, 2017 Question 1 (8 marks) In order to qualify for a letter sorting job, applicants are given a speed-reading test. The scores are normally distributed with mean of 80 words per minute and standard...



Answered Same DayDec 26, 2021

Answer To: Assignment 2 Due Date: 29 August, 2017 Weighting: 20% Full Marks: 100 STA2300 Data Analysis S2, 2017...

Robert answered on Dec 26 2021
124 Votes
1.a) The variable in this problem is speed reading. The unit of measurement is words per
minute.
b)For X=65, the z score is z=(x-mu)/sigma=(65-80)/8=-1.88
The requ
ired probability is P(X<65)=P(z<-1.88)=0.0301.
The percentage of applicants who score up to 65 is 3.01%.
c) The top 20 percent means a "greater-than" probability that's equal to 20 percent, and the
(100-20)th=80th percentile.
So find x such that p(X < x) = 0.80.
Looking in the body of the Z-table, the probability closest to 0.80 is 0.7995, which falls in the row
for z = +0.8 and the column for 0.04. That means the 80th percentile for Z is +0.84;
Convert the z-value back to an x-value and get x = 80 + 0.84[8] = 86.72.
6.a)The appropriate chart to display the distribution of current salary of employees of the
industry is bar graph.
Follow the steps given below:
Open SPSS. Go to Graphs, select Legacy dialogs and click on Bar. Then select Simple Bar. Check
Summaries for Group of cases and select Define. Check Other statistics (Mean). Move current
salary to the variables box. Move Employee category to category axis. Click Ok. The final output
is given below.
b)The above graph depicts that the shape of the distribution is skewed to the right. Managers of
the industry are highly paid. So, there are high outliers to the right of the distribution. Since, the
distribution is right- skewed, the mean has been pulled up.
c)To compute mean and standard deviation go to Analyze, click on Descriptive statistics and
then select Descriptives, move current salary to the variables box. Click Ok. The final output is
given below.
d)To compute Median and IQR, go to Frequencies from...
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